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System
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Fan
Lwi
63 125 250 500 1K 2K 4K 8K
Duct type
Silencer type
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Width
mm
Height
mm
Splitter info
Leg length, X
mm
Leg length, Y
mm
Pressure loss factor
Air volume
qv
Description
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BDLD-900-800-150-150-3008

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Rectangular curved attenuator
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BDLD is a curved rectangular attenuator with convensional design with width and height dimensions that doesn't exceed the present connection dimensions.

Sizes available in horizontal mounting between (a x b) 400x300 mm to 2400x2400 mm and in vertical mounting between 400x300 mm and 2000x1500 mm.

Design

BDLD has an external shell of trapezoidal corrugated sheet metal for stabillity and reduced risk of oscillation.
BDLD is designed for low pressure drop with baffle combinations that attenuate aspecially low frequences well.
The type of insulation material is developed to provide good sound properties, low weight and to be cleanable.

BDLD meets the requirements of air tightness class C and pressure class 2 according to EN 1507:2006.

Tested according to ISO 7235.

BDLD is equipped with joining profile type RJFP / LS.

Tools for dimensioning and planning

The IT-online calculation tool lindQST or DIMsilencer are recommended for fast choise of attenuator or a complete and fast sound calculation of the duct system.

Total pressure loss
Pa
Face velocity
m/s
63 125 250 500 1K 2K 4K 8K dB(A) NR
Lwi - - - - - - - - 0 0
IL 3 10 17 16 15 16 17 17
Lw 0 0 0 0 0 0 0 0 0 0
Lwo - - - - - - - - 0 0
dB dB dB dB dB dB dB dB dB(A) NR

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