McQuay MCK 020A

NC Curves
CK20A/AR NC Curve s
0
10
20
30
40
50
60
70
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound pressure level (dB, ref 20 Pa)
M easured in anecho ic ro om at 1.4m below the facia
NC-40
NC-35
NC-30
NC-25
NC-20
NC-45
NC-50
Hi g h f an
Medium fan
Lo w f an
CK25A/AR NC Curve s
0
10
20
30
40
50
60
70
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound pressure level (dB, ref 20 Pa)
M easured in anecho ic ro om at 1.4m below the facia
NC-40
NC-35
NC-30
NC-25
NC-45
NC-50
Hi g h f an
Medium fan
Lo w f an
NC-20
15