air-in®
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Air-In® supply air valves and noise reducers increase the comfort of living and save energy.
Air-In® supply air valves and noise reducers offer superior noise reduction values and the draught-free air quantities.

AIR-IN® NOISE REDUCERS K250 / K400 / K500

äänenvaimenninThe Air-In® noise reducer effectively reduces noise from machines and ducts as well as noise between flats. It allows a maximum inflow of air of 250 litres per second with efficient noise reduction.

The Air-In® noise trap achieves better results using a single damper than most other products using two.

Specifications

Product  Height
mm
Width
mm
Length
mm
Connection ducts
Ø mm
Air-In K250 200 250 250 125/100
Air-In K400 200 400 400 160/125/100
Air-In K500 250 500 500 200/160

Features

  • Superior noise reduction
  • Damper for adjusting the amount of air
  • Acts as a cleaning hatch for the ducts
  • Thanks to its compact size, it is easy to install in narrow spaces within false ceilings
  • Manufactured from durable galvanised steel
  • Does not contain wool, meaning that no loose particles are released into the flow of air
  • The product is light and no separate support structures are needed

Noise reduction per octave band

Quantity Unit K800 K500.1 K500.2 K400 K400H K250 K250H
Doct63 dB 10,6 1,5 1,0 3,0 2,5 1,5 1,5
Doct125 dB 6,9 6,5 8,0 8,0 7,5 4,5 4,5
Doct250 dB 10,3 8,5 11,5 10,5 8,0 6,5 5,0
Doct500 dB 15,4 12,5 17,0 17,0 16,0 10,0 9,0
Doct1000 dB 28,0 26,0 29,0 27,5 28,0 14,5 14,5
Doct2000 dB 32,7 39,5 43,0 43,5 42,5 26,0 27,5
Doct4000 dB 35,8 37,5 45,0 48,0 48,5 37,0 39,0
Doct8000 dB 36,0 39,5 44,5 40,0 39,0 36,0 36,5