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Unit of Measure

Specifications

Length

 N/A 60 in

Use for

 N/A Greenheck Vane Axial Fans

Casing Side

 N/A 69 in

Inlet Diameter

 N/A 62 in

Outlet Diameter

 N/A 30.375 in

Maximum Air Flow

 N/A 27000 ft³/min

Shape of Inlet/Outlet

 N/A Round Inlet

Silencer Size Class

 N/A A

Type

 N/A Acoustical

Dynamic Insertion Loss

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

 N/A 2 dB

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

 N/A 6 dB

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

 N/A 12 dB

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

 N/A 21 dB

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

 N/A 25 dB

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

 N/A 25 dB

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

 N/A 14 dB

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

 N/A 11 dB

Note

Note

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