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Unit of Measure

Specifications

Length

 N/A 142 in

Use for

 N/A Greenheck Vane Axial Fans

Casing Side

 N/A 156 in

Inlet Diameter

 N/A 149 in

Outlet Diameter

 N/A 73.000 in

Maximum Air Flow

 N/A 156000 ft³/min

Shape of Inlet/Outlet

 N/A Round Inlet

Silencer Size Class

 N/A D

Type

 N/A Acoustical

Dynamic Insertion Loss

Dynamic Insertion Loss @ 63 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 9 dB

Dynamic Insertion Loss @ 125 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 18 dB

Dynamic Insertion Loss @ 250 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 18 dB

Dynamic Insertion Loss @ 500 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 31 dB

Dynamic Insertion Loss @ 1000 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 31 dB

Dynamic Insertion Loss @ 2000 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 28 dB

Dynamic Insertion Loss @ 4000 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 20 dB

Dynamic Insertion Loss @ 8000 Hertz (Hz), 1500 Feet per Minute (FPM)

 N/A 20 dB

Note

Note

 N/A For each 1500 FPM over 1500, add 1 dB per band.