Acraflow Acoustic Louvres - 200/200S Series
  .

Noise Reduction (dB)
Hertz
125
250
500
1000
2000
4000
Series 200S
14
12
16
23
23
18
Series 200
14
13
17
27
30
22
   

 
 

Test Specimen nominal size 900W x 2400H
Air Pressure Drop (APD) graphs are for standard blade spacing.
For applications where the face velocity is above 2.0m/s or Pressure Drop is critical please consult Acran.
All tests conducted in accordance with AS 1191-1976
Noise Reduction = Transmission Loss + 6dB (Across all frequencies)
.
top
back home