Radiator grille A1 is an aluminium grille with fixed bars specially designed to cover convector channels. A1 is always supplied with the bars running between the longest sides. The distance between the bars is 20 mm and the grille has a free area of 75%.
The grille is dimensioned for a personal load up to a width of 500 mm.

AC is a supply grille made from aluminum with curved adjustable blades, oriented 1-way or 2-way horizontal or vertical both for wall and ceiling installation.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AD is an adjustable single or double deflection grille made of aluminium. With adjustable blades, the grille is very useful for air supply and can be adapted to the required throw and air spread pattern.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AD is an adjustable single or double deflection grille made of aluminium. With adjustable blades, the grille is very useful for air supply and can be adapted to the required throw and air spread pattern.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AE is an eggcrate grille for exhaust with mesh 0˚ or 45˚ inclination made of aluminum.

The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AE is an eggcrate grille for exhaust with mesh 0˚ or 45˚ inclination made of aluminum.

The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AEC is an eggcrate grille for extract air with eggcrate grid 0˚ or 45˚ inclination, made of aluminum and specifically designed for installation in modular ceilings, with particular thin frame that becomes invisible, once installed.

AEC grille is available with G3 filter as accessory.

Available in various standard dimensions.

AF is an aluminium filter holder grille for exhaust equipped with either washable or rigid filter class G3.
Optional grids are eggcrate mesh 0˚ or 45˚ inclination and fixed 45° angle blades. The grille is suitable for wall installation.

AF grille is available with plenum box (PBAF) as accessory.

AFC is a filter holder grille for extract and is equipped with rigid filter class G3.
The AFC is available with several type of grid options made of aluminum and is specifically designed for installation also in modular ceilings. Optional grids are eggcrate mesh 0˚ or 45˚ inclination, fixed 45° angle blades or perforated front plate.

With a smart push-pull closing system on the grid, it is easy to gain access to the filter.

AFC grille is available with plenum box (PBAF) as accessory.

AG is a pedestrian grille made of aluminum for floor installation. The grille can be installed with or without frame and adjustable height screws are optional. AG is available with opposed blade damper and dust basket accessories.
AG is tested and certified according to ISO UNI EN 13264 in the “light” resistance class. This class is the highest achievable in aluminum and allows a concentrated load of 450 kg in the middle without breaking and up to 150 kg without damage (600x600 size grille).
AG grille is available in various standard dimensions. Customized sizes available on request.

The valve is designed for installation at a wall or in a ceiling.

It can be used for new-build and for replacement.

Its smart grip function ensures an easy installation.

Its unique sound data ensure an optimum sound level.

The valve consists of two parts; the valve body (AIRYB) and the flat front plate (AIRYFP).

The valve body is fixed to the duct system or a valve socket via flexible spring wings.

The front plate is attached to the valve body via springs.

There are 5 standard front plate shapes:

ROUN – a circle,
BOW – a square with sligthly bulged edges,
SQUA – a square,
ELLI – an super ellipse.
RECT – a rectangle,
Special shapes are possible on request.

It is recommended that the valve is mounted in the frame ILVRU. The product will also fit in the valve frames VRGU, VRGM, VRFU, VRFM and the products BU GJUT, and TCPU GJUT.
The valve body has to cover the brim of the product it is fitted into. Therefor the maximum diameter of the brim for Ø100 is 133,5 mm, for Ø125 is 152,5 mm and for Ø160 is 187,5 mm.

Can be equipped with a blanking – off sector plate for 2 or 3 way air flow.

The AL is a linear bar grille with fixed blades made of aluminum. With several frame and grid combinations, the AL grille is very flexible and suitable for various kind of applications.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.
The AL can be delivered as a single grille in lengths up to the maximum size indicated in the following tables (Min.-max. dimensions).

The AL is a linear bar grille with fixed blades made of aluminum. With several frame and grid combinations, the AL grille is very flexible and suitable for various kind of applications.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.
The AL can be delivered as a single grille in lengths up to the maximum size indicated in the following tables (Min.-max. dimensions).

AR is an extract grille with fixed 45° angled blades made of aluminium. The AR is generally used for wall installation.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AR is an extract grille with fixed 45° angled blades made of aluminium. The AR is generally used for wall installation.
The grille is available with several mounting options and can be delivered with mounting frame, opposed blade damper and plenum box accessories.

AT is a transfer air grille (overflow grille), made of aluminum suitable for installation in doors and walls.
Can be delivered as a single part grille or including a mating flange.

Special grille type B is a range of aluminium grilles with fixed bars. The grille can be configured on the basis of the summary on the following pages. As part of the configuration you can select frame, grids, type of mounting and accessories. Finally the A x B dimension is specified. Please note that the A x B dimension varies according to the frame selected. A x B dimensions have certain limitations, which are shown under the order code.

B3020 is a rectangular aluminium grille with fixed horizontal bars. B3020 is used for both supply and exhaust air, and is supplied as standard with springs for installation in plenum boxes type VBA, WB or mounting frame type GGR. B3020 can also be used with volume regulator GAT.

B3020 is a rectangular aluminium grille with fixed horizontal bars. B3020 can be used for supply air and exhaust. B3020 is supplied as standard with springs for installation in plenum boxes type VBA, WB. In the product photo the grille is shown with a VBA box.

Special grille type C is a range of aluminium grilles with adjustable horizontal bars for supply air systems. The grille can be configured on the basis of the summary. As part of the configuration you can select the type of mounting and accessories. Finally, A x B dimensions are specified. These have certain limitations, which are shown under the order code.

C20 is a rectangular aluminium grille with adjustable horizontal bars. C21 is also equipped with vertical directional bars for regulation of dispersal patterns. C20/C21 should be used for supply air. C20/C21 are supplied as standard with springs for installation in plenum boxes type VBA, WB or mounting frame type GGR. C20/C21 can also be used with volume regulator GAT.

C20 is a rectangular aluminium grille with adjustable horizontal bars. C21 is also equipped with vertical directional bars for regulation of dispersal patterns. C20/C21 can be used for supply air and come as standard with springs for installation in plenum boxes type VBA and WB. In the product photo the grille is shown with a VBA box.

C20 is a rectangular aluminium grille with adjustable horizontal bars. C21 is also equipped with vertical directional bars for regulation of dispersal patterns. C20/C21 are used for supply air and are supplied as standard with springs for installation in plenum boxes type VBA, WB or mounting frame type GGR. C20/C21 can also be used with volume regulator GAT.

C20 is a rectangular aluminium grille with adjustable horizontal bars. C21 is also equipped with vertical directional bars for regulation of dispersal patterns. C20/C21 can be used for supply air and come as standard with springs for installation in plenum boxes type VBA and WB. In the product photo the grille is shown with a VBA box.

Comdif CBA is a semicircular perforated displacement diffuser for installation against/on a wall or column. Behind the perforated front plate, CBA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air.
• The geometry of the near zone can be adjusted using adjustable nozzles.
• Duct covers, plinths and wall brackets can be supplied as accessories

CBAL is a low-impulse diffuser for ceiling installation. The diffuser is suitable for the supply of replacement air in laboratories, commercial kitchens, etc. The diffuser is equipped with adjustable nozzles behind the perforated face plate, allowing the dispersal pattern to be adjusted according to the conditions.

CBAV is a low-impulse diffuser for ceiling installation against a wall or skirt. The diffuser is suitable for the supply of replacement air in laboratories, commercial kitchens, etc. The diffuser is equipped with adjustable nozzles behind the perforated face plate, allowing the dispersal pattern to be adjusted according to the conditions.

Comdif CCA is a circular perforated displacement diffuser for freestanding installation. Behind the perforated front plate, CCA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air.
• The geometry of the near zone can be adjusted using adjustable nozzles.
• Plinth can be supplied as accessory.

CCP is a circular displacement diffuser for installation under seats in theatres, auditoriums, etc. This diffuser is suitable for installation in a pressure chamber. It has a fixed resistance that ensures even distribution of the air. The diffuser can be adapted to the correct air volume and pressure, specified according to the actual conditions.

• It has built-in resistance that ensures even distribution over the diffuser
• The diffuser can be supplied with a specified pressure setting
• The diffuser is available in other dimensions

CCU is a circular displacement diffuser for installation under seats in theatres, auditoriums, etc. The diffuser is supplied with a circular connection. The diffuser can be supplied with a fixed resistance, adapted to the correct air volume and pressure, specified according to the actual conditions.

• Circular connection with Lindab Safe.
• The diffuser can be supplied with a fixed resistance at a specified pressure setting.
• The diffuser is available in other dimensions.

Comdif CEA is a rectangular perforated displacement diffuser for installation against a wall or column. Behind the perforated front plate, CEA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air.
• The geometry of the near zone can be adjusted using adjustable nozzles.
• Plinths can be supplied as accessories.

Comdif CHA is a semicircular perforated displacement diffuser for installation against a wall or column. Behind the perforated front plate, CHA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air.
• The geometry of the near zone can be adjusted using adjustable nozzles
• Duct covers, plinths and wall brackets can be supplied as accessories

Comdif CKA is a square perforated displacement diffuser for installation against a wall or column. Behind the perforated front plate, CKA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air
• The geometry of the near zone can be adjusted using adjustable nozzles
• Plinths can be supplied as accessories

Comdif CQA is a semicircular perforated displacement diffuser for corner installation. Behind the perforated front plate, CQA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a circular duct connection (MF measure), so the diffuser can be connected at the top or bottom. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air.
• The geometry of the near zone can be adjusted using adjustable nozzles
• Duct covers, plinths and wall brackets can be supplied as accessories

Comdif CRA is a rectangular perforated displacement diffuser for installation against a wall or column. CRA has a rectangular connection and therefore has a limited depth, making it ideal for installation in premises where a discrete appearance is required. Behind the perforated front plate, CRA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a rectangular duct connection, so the diffuser can be connected at the top or bottom. The connection duct CRAZ with a circular connection is available as an accessory. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for the supply of large volumes of air.
• The geometry of the near zone can be adjusted using adjustable nozzles
• Duct connections and plinths can be supplied as accessories

CRL is a circular diffuser with an unperforated adjustable face plate and can be used for both supply and extract air. The diffuser can be switched between horizontal and vertical supply air, and is therefore suitable for the horizontal supply of cooled air or vertical supply of heated air. The CRL can be equipped with accessories of various types in order to achieve optimal function.
Installing a CRL diffuser in a plenum box type MB can help to achieve a stable airflow to the diffuser as well as realise the potential for individual adjustment.
Damper type B is an unique linear cone damper which allows to use the full operational area (0-100%) and allows to balance with a high pressure drop over the box with low sound generation. Furthermore the construction of the damper gives an accurate and reliable measurement.
Damper type C and E are with rotating blade dampers for respectively supply and extract. Typically used in applications that don’t require a high balancing pressure in the plenum box.

• Suitable for both supply and extract air
• Suitable for horizontal or vertical supply air patterns
• Plenum box with several damper options

CRP is a rectangular displacement diffuser for installation under seats in theatres, auditoriums, etc. It is suitable for installation in a pressure chamber and has a fixed resistance that ensures even distribution of the air. The diffuser can be adapted to the correct air volume and pressure, specified according to the actual conditions.

• It has built-in resistance that ensures even distribution over the diffusers
• The diffuser can be supplied with a specified pressure setting
• The diffuser is available in other dimensions

CRU is a rectangular displacement diffuser for installation under seats in theatres, auditoriums, etc. The diffuser is supplied with a circular connection. The diffuser can be supplied with a fixed resistance adapted to the correct air volume and pressure, specified according to the actual conditions.

• Circular connection with Lindab Safe.
• The diffuser can be supplied with a fixed resistance at a specified pressure setting
• The diffuser is available in other dimensions.

Transmitter for measuring carbon dioxide concentration and temperature in air. Measuring range 0...2000 ppm and output signal 0...10 V DC, passive PT1000 output and 0...10 V DC for temperature.

Combined CO2 and temperature transmitter
Infrared technology (NDIR)
CO2 concentration 0...2000 ppm measuring range
Excellent long-term stability
Easy installation and service-friendly housing
Probe only 12 mm
Automatic CO2 calibration

CTDT2 has a probe in the shape of a so-called venturi tube with two air channels. The CO2 sensor element
is mounted in the cover part of the casing and the temperature sensor element is located inside the probe.
The air in the ventilation duct is transported to the CO2 sensor element through one half of the probe and then back to the duct through the other half. The temperature sensor is located inside the probe.

A range of room transmitters for measuring carbon dioxide concentration in indoor environments. The transmitter has a built-in CO2 sensor with working range 0...2000 ppm and output signal 0...10 V, as well as a built-in PT1000 temperature sensor with separate terminals.

Output signal CO2, 0...10 V DC referring to 0...2000 ppm
Temperature sensor, PT1000 class DIN B
CO2 concentration, 0...2000 ppm
Temperature, 0...50°C
Good long-term stability

Transmitters with automatic calibration combining measurement of CO2 level and temperature in the same casing. The sensors are mounted in the cover-part of the casing. The cover is easy to detach from the back by means of snap-in grips and detachable terminals. This makes mounting easier. Furthermore, no cables have to be disconnected, simplifying service and replacement.
The transmitters are intended for wall mounting in HVAC systems.

Comdif CVA is a rectangular perforated displacement diffuser for installation in walls or similar structures. CVA has a rectangular connection. Behind the perforated front plate, CVA is equipped with individually adjustable nozzles, making it possible to alter the geometry of the near zone. The diffuser can be turned and has a rectangular duct connection, so the diffuser can be connected at the top or bottom. A wall duct with circular connection is supplied as an accessory. The diffuser is suitable for the supply of large volumes of moderately cooled air.

• The diffuser is suitable for installation in walls.
• The geometry of the near zone can be adjusted using adjustable nozzles.
• A wall duct can be supplied as an accessory.

D11 is a rectangular aluminium grille with fixed slanting horizontal bars. D11 is used as an overflow grille for mounting in doors. D11 is supplied as standard with countersunk screw holes and mating flange for doors, thickness from 18 to 43 mm. D11 can be supplied for doors thicknesses up to 61mm.

DAD is an adjustable supply air nozzle suitable for ventilation of large areas where long throws are required. The nozzle can be freely rotated 30 degrees in any direction in relation to the central line of the nozzle. The nozzle can be used for both heated and cooled air. The nozzle can be installed directly into a circular duct, fitting, wall or duct side. Supplied with screw holes through flange (DAD-0).

• Flexible adjustable nozzle
• Long throws
• Simple installation

DBV is a volume flow regulator used for VAV regulation of the supply air in a terminal duct for an active chilled beam. Also suitable togehter with eg. wall diffusers.

DBV is equipped with a unique linear cone damper technology, which makes it possible to regulate up to 200 Pa with low sound level. The minimum air flow k-value at closed position is 0,73 (DBV-125 at Dp_t = 100 Pa)).

The built-in VAV actuator is delivered pre-programmed with damper characteristic and in combination with a stable flow measurement over the damper, it makes the VAV regulation very accurate and reliable.

DBV can be installed directly in a terminal duct in front of the active chilled beam. DBV is not suited for exhaust air.

• Unique linear cone damper
• High capacity and low sound levels
• Stable flow measurements
• Reliable and accurate VAV regulation

DCS is a circular diffuser with integrated box for visible installation. The diffuser is equipped with individually adjustable nozzles. The diffuser has an built-in damper and a measuring device for individual adjustment. DCS is equipped with a M8 threaded rod at the top for attaching the diffuser. The diffuser is suitable for the horizontal supply of cooled air, where great flexibility in the dispersal pattern is required.

• Individually adjustable nozzles
• Supplied with integrated M8 rivet nut for suspension
• Detachable damper for cleaning of duct

DCT is a circular control and shut-off damper.

The damper can be used for pressure or volume flow regulation with external control options (open, closed, min., max.) depending on the form of control/regulation.

DCT is available with a spring return motor. The damper can be controlled by an FRU (as a VRU) or a PR regulator, by a BMS system or Regula Combi (with modulating signal) or as a slave for another damper (mechanical slave operation with the same damper position).

When ordering, it is important to specify the form of control, and whether the damper motor must be programmable. All DCT dampers are supplied with Belimo motors.

The opposed blade damper DGA can be fitted to the AD, AL, AR and AC aluminium grilles. It can also be fitted to the WLA-11 weather louvre aluminium grille .
The opposed blade damper is held in place by special patented clips, designed both for fixing the damper to the grille and for fitting it on a mounting frame or a plenum PBA.
The DGA dampers are made entirely of galvanized steel and have mechanism for opening and closing all the damper blades simultaneously (by using a screwdriver).

The opposed blade damper DGS and DGSS can be fitted to SD steel grilles and SSD stainless steel grilles.
The DGSS has a frame of stainless steel and is mainly to be used with the SSD grilles, see material and finish for details.

The DGS3 type is used for the STH-21 thermostatic steel grille.

The DGS and DGSS have mechanisms for opening and closing all the damper blades simultaneously, by using a screwdriver and are held in place by clips, designed for easy fitting of the damper to the grille.

The damper DIRU with flow meter offers measurement of the air flow. DIRU has the following characteristics: low noise level, centric flow, fixed measurement nozzles for accurate flow measurement and is equipped with regulating facilities that can be fully opened, which means that you do not need cleaning covers. It fulfils tightness class C.

The dimension graph is to be used to determine the pressure drop over the damper with flow meter and to give information regarding the sound effect level at different settings. When balancing the system the balancing graph should be used.

There is a separate assembly, measuring, balancing and maintenance instruction for dampers with flow meter.

The damper blades forms a measuring flange which allows flow measuring. By measuring the pressure difference between the measure nozzles, you can through the equation on the damper derive the flow q [l/s]. The setting value of the damper and the correction factor (k-factor) is the same number which means that you do not have to read a graph in order to get the k-factor from a setting value.

The air flow is regulated with a handle.

Ø 80–630 fullfills pressure class A in closed position.

Material

The damper is made of hot-dip galvanized sheet steel.

Installation

Consider required straight distance after or before disturbance, as mentioned on the card attached to the measurement nozzles, to obtain accurate flow measurement.

Cleaning

By fully open the damper, one get access to the duct. Do not forget to readjust the damper after cleaning.

DJP is a rectangular control and shut-off damper.

DJP has opposing aerodynamic damper blades that are rotated via a lever device. The damper is supplied with an LS connection system for rectangular ducts. The damper can be used for pressure or volume flow regulation with external control options (open, closed, min., max.) depending on the form of control/regulation.

The damper can be controlled by an FRA (as a VRA) or a PR regulator, directly by a temperature sensor or BMS system (2–10 V modulating) or as a slave for another damper (mechanical slave operation with the same damper position).
DJP is also available with a spring return motor.

When ordering, it is important to specify the form of control, and whether the damper motor must be programmable. All DJP dampers have Belimo motors installed.

DR24 is a rectangular diffuser with adjustable bars suitable for installation in a wall or skirting board. The diffuser is suitable for the horizontal supply of cooled air. The bars in the front make it possible to vary the throw. The diffuser is used with a WB type plenum box. The plenum box is equipped with a damper and measuring device, enabling individual adjustment.

• Adjustable bars
• Flexible dispersal pattern
• Regardless of straight ducting before the diffuser
• Telescopic function in the plenum box

EXAD is an exhaust air terminal device consisting of a conical inlet, a silencer with Acutec^® polyester insulation and a DIRU damper. Sizes available are Ø250, Ø315 and Ø400 mm.
EXAD is a device designed for large air volumes between 50 - 600 l/s, especially suitable for industry, sport and exhibition halls, shopping centers etc.

Wire guard is an accessory option.

Type F special grilles are a range of aluminium grilles with square grids for air exhaust. The grille can be configured on the basis of the summary. As part of the configuration you can select type of mount and accessories. Finally, A x B dimensions are specified. These have certain limitations, which are shown under the order code.

F20 is a rectangular aluminium grille with square grids. F20 is particularly suitable for air exhaust. F20 is supplied as standard with springs for installation in plenum boxes type VBA, WB or mounting frame type GGR. F20 can also be used with volume regulator GAT.

F20 is a rectangular aluminium grille with fixed slanting horizontal bars. F20 is used for air exhaust and is supplied as standard with springs for installation in plenum boxes type VBA and WB. In the product photo the grille is shown with a VBA box.

The F50 is a circular aluminium grille with square grids.

The F51 has exactly the same features and dimensions as the F50, but has pre-drilled holes on the front for installation in ceilings and walls.

The F50/51 is particulary suitable for air exhaust.

FKD is an adjustable circular multi-cone diffuser, which is typically used for supply air. The diffuser can be switched between horizontal and vertical supply air and is therefore ideal for the supply of both heated and cooled air.
Installing an FKD diffuser up to size 400 in a plenum box type MB can help to achieve a stable airflow to the diffuser as well as realise the potential for individual adjustment.
Damper type B is an unique linear cone damper which allows to use the full operational area (0-100%) and allows to balance with a high pressure drop over the box with low sound generation. Furthermore the construction of the damper gives an accurate and reliable measurement.
Damper type C has a rotating blade damper for supply air. Typically used in applications that don’t require a high balancing pressure in the plenum box.

• Suitable for supply air
• Vertical or horizontal supply air pattern
• Plenum box with several damper options

FRA is a measuring unit with a measuring cross, which is used for measuring volume flow in rectangular ducts.

FRA is equipped with Belimo VRD3, which provides an output signal that is proportional to the volume flow.

The FRA flow measuring unit and a DJP type damper put together will form a complete VRA unit. VRA is used for volume flow regulation in rectangular ducts, either for constant volume flow with step control, e.g. controlled by a switch or clock, or for variable volume flow, where the volume flow varies between a defined minimum and maximum limit. The actual volume flow is determined by a control signal from, for example, Regula Combi, BMS or another FRA/VRA.

The FRA needs a certain distance of straight duct before the unit and this has to be observed to obtain a stable and accurate airflow regulation.

• Requires minimal initial pressure (Less than 20 Pa at V_nom)
• Output signal indicates actual volumeflow

FRU is a measuring unit with a measuring cross, which is used for measuring volume flow in circular ducts.

FRU is equipped with Belimo VRD3, providing an output signal that is proportional to the volume flow. FRU can be used to monitor the actual airflow or can be used to control a volume flow regulator.
FRU is equipped with Lindab Safe in the front for connection to the duct and a female coupling in the back, and is ready for insulation up to 50 mm.
FRU can be installed in any position without requiring adjustment.
To avoid contamination of the measuring cross, FRU should only be used for clean air.
FRU needs a certain distance of straight duct before the unit and this has to be observed to obtain a stable and accurate airflow regulation.

• Requires minimal initial pressure (Less than 20 Pa at V_nom)
• Output signal indicates actual volume flow

Special grille type G is a range of aluminium grilles with fixed slanting horizontal bars for air exhaust. The grille can be configured on the basis of the summary. As part of the configuration you can select the type of mounting and accessories. Finally, A x B dimensions are specified. These have certain limitations, which are shown under the order code.

G20 is a rectangular aluminium grille with fixed slanting horizontal bars. G20 is used for air exhaust and is supplied as standard with springs for installation in plenum boxes type VBA, WB or mounting frame type GGR. G20 can also be used with volume regulator GAT.

G20 is a rectangular aluminium grille with fixed slanting horizontal bars. G20 can be used for exhaust. G20 is supplied as standard with springs for installation in plenum boxes, type VBA. In the product photo the grille is shown with a VBA box

Volume regulator GAT with opposing blades that can be set from the front of the grille.
Installed directly in the grille using springs.

GD is a rubber supply air nozzle suitable for ventilation of large areas where long throws are required. The nozzle can be adjusted for directional airflow, and can be installed directly into circular ducts, ( min. Ø250 mm ), or duct walls,
( min. height = 100 mm ). The nozzle can be used for both heated and cooled air.

• Directional airflow
• Long throws
• Simple installation

Mounting frame GGR for installation in duct connector or duct side.

GS23 is a square diffuser with an aluminium grid. GS23 is used for extract. Installing a GS23-V diffuser in a plenum box type MB can help to achieve a stable flow of air to the diffuser as well as achieving the option for individual adjustment of air flow.
Damper type B-E is an unique linear cone damper which allows to use the full operational area (0-100%) and allows to balance with a high pressure drop over the box with low sound generation.
Damper type E has a rotating blade damper for extract air. Used for applications that don’t require a high balancing pressure in the plenum box.

• High capacity
• Can be installed with a plenum box with several damper options

GTI is a flexible supply air nozzle that is suitable for ventilation of large areas. The nozzle can be used for both heated and cooled air and can be adjusted from diffused to concentrated supply air patterns. The supply air pattern can be adjusted by turning the insert in relation to the central line of the nozzle. The nozzle is equipped with LindabSafeand can be installed directly into a circular duct, fitting, wall or duct side.

• Flexible nozzle for cooling and heating
• Adjustable dispersal pattern
• Simple installation

The type H plenum box is a side-connected plenum box for supply and exhaust air for the Versio range of diffusers. The plenum box can be equipped with an adjustment damper and a measuring device, depending on the configuration required.
The adjustment damper is operated from the front of the box by means of a graduated handle with integrated locking mechanism.
K-factors for determining the volume flow are printed on the damper handle. The plenum box has a low overall height and has internal sound insulation of fibre-free material.
For configuration with an integrated ceiling solution, the box is equipped with a frame and/or a face plate, depending on the type of ceiling. For further details, see the Versio range of ceiling diffusers.

• Can be used for both supply and exhaust air.
• Can be connected regardless of straight ducting before the box
• Detachable damper and plenum plate for access to duct
• The same box is used for all face plates and ceiling systems

Circular roof hood intended for outdoor air and extract air. The hood is designed for location above the roof with or without a roof through connection. The air runs both on the top- and downside of the hood. This is valid both for outdoor and extract air. The hood is free-draining downwards. Can also be supplied with a pest-proof mesh.

NOTE! When fans are not running there is always a risk for drifting snow and damp to penetrate into ducts. At some occasions also condensation can cause trouble.

H is manufactured as standard from galvanised steel sheet Z275, but is also available in aluminium zinc AZ 185, stainless steel sheet 1.4301, stainless acid-resistant steel sheet 1.4404 or painted.

H in dimensions 100 – 315 has a sleeve connection as standard and fits on the outside of ventilation ducts.

Dimensions 400 – 1250 are supplied with flange connection (including counter-flange) as standard. They are also supplied with twistable lifting and anchoring eyelets. An individual anchoring eyelet must not be subjected to forces in excess of 1 500 N.

All dimensions can also be obtained with connections that fit directly to the roof through connection TGR.

H1 is a louvred grille for installation in external walls. H1 is used for both fresh air intake and discharge. H1 is supplied as standard with a water stop at the rear edge, drip nose and bird netting.

H2 is a louvred grille for installation in external walls. H2 is used for both fresh air intake and discharge. H2 is supplied as standard with a water stop at the rear edge and bird netting.

HLD is a circular high level displacement diffuser adapted for industrial requirements. HLD is equipped with a damper function, which makes it possible to vary the supply air pattern between horizontal or vertical, depending on whether heating or cooling is required. The switch can be made manually, or it can be automated using several types of motor. The external dimensions of the diffuser are adapted to the connection, making it easy to integrate into an ordinary duct system. HLD can be suspended from or installed on a wall or column using the installation bracket, which ensures great flexibility no matter how premises are used.

• Suitable for both cooling and heating
• Horizontal and vertical dispersal patterns
• High capacity
• Flexible positioning
• Can be supplied with an electric motor
• Can be supplied with a thermal actuator

Installation floor grille type IGR is supplied as standard as an I-profile with 12.5 mm divisions and 55% free area. However, the grille can also be supplied with other profile types and with other divisions.

Load with standard grid

The grille can handle the following load without permanent deformation.

Valve for exhaust air.

Designed for wall or ceiling mounting.

Flat spring holders connect to socket VRGU, VRGL, VRGM, VRFU or VRFM.

Valve for supply air.

Designed for ceiling mounting.

Bayonet holders connect to socket VRGU, VRGL or VRGM.

Valve for supply air.

Designed for ceiling mounting.

Equipped with a removable blanking-off sector plate for
preventing the air flow in a desired direction.

Bayonet holders connect to socket VRGU, VRGL or VRGM.

Valve for exhaust air.

Designed for wall or ceiling mounting.

Flat spring holders connect to duct.

Valve for exhaust air.

Designed for wall or ceiling mounting.

Bayonet holders connect to socket VRGU, VRGL, or VRGM.

Valve for exhaust air.

Designed for wall or ceiling mounting.

Bayonet holders connect to socket VRGU, VRGL or VRGM.

Valve for exhaust air.

Designed for wall or ceiling mounting.

Spring holders connect to socket VRFU, VRFM or VRR.