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

CHA

CHA-1207
Generate PDF Add to project
  • Product information
  • Results
  • View in 3D
MISSING
Perforated diffuser - semicircular

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
Face velocity
v
m/s
Total pressure loss
Δpt
Pa
Sound power level
LwA
dB(A)
Sound pressure level
LpA
dB(A)
Near zone, A
a0.2
m
Near zone, B
b0.2
m
  • Pressure and sound power diagram
    MISSING
    Hz 63 125 250 500 1K 2K 4K 8K
    Coct 11 -4 1 1 -9 -16 -28 -34
    ΔL 19 14 5 3 2 1 2 1
Logo CHA

© 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