Skip Navigation LinksLindQST / Air diffusion calculator
Product category
Product name
Reset
Plenum box
Plenum box damper
Duct connection size
Diffuser connection size
Function
Connection
Working setup
Air volume
qv
Room attenuation
Dr
dB
Adjustment pressure
Δp
Pa
Description
Usercode
Calculate

FKD

FKD-160+MBB-100-160-S
Generate PDF Add to project
  • Product information
  • Results
  • View in 3D
MISSING
Multi-cone diffuser

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
  • On request available in stainless steel AISI 304 or 316
Face velocity
v
m/s
Total pressure loss
Δpt
Pa
Sound power level
LwA
dB(A)
Sound pressure level
LpA
dB(A)
Throw
L0.2
m
  • Pressure and sound power diagram
    MISSING
    Hz 63 125 250 500 1K 2K 4K 8K
    Coct 9 4 2 -3 -5 -9 -16 -22
    ΔL 20 16 5 15 17 17 16 19
Logo FKD

© Copyright 2026, Lindab AB. All rights reserved. LindQST.com is owned by Lindab AB all images, technical data and other material found on this site belongs to Lindab AB. Please contact Lindab if you wish to use our material in other matters.

Need help?

If you are logged in, you can invite & work together with a Lindab Representatives in your projects using this function.
Login