Greenheck Fan DFD-150X series is a dynamic rated fire damper with a sleeve that has a 11⁄2-hour fire resistance rating. It is approved for use in walls, floors, and partitions with fire resistance ratings less than 3 hours. This model carries a 11⁄2 hour UL fire damper label. UL 555 classifies dynamic rated fire dampers for use in HVAC systems that are operational in the event of fire.
The DFD-150X series has a maximum velocity of 4000 fpm (20.3 m/s) up to 24 in. x 24 in. (610mm x 610mm) and 2000 fpm (10.2 m/s) above 24 in. x 24 in. (610mm x 610mm). It has a maximum
Greenheck Fan DFD-150X series is a dynamic rated fire damper with a sleeve that has a 11⁄2-hour fire resistance rating. It is approved for use in walls, floors, and partitions with fire resistance ratings less than 3 hours. This model carries a 11⁄2 hour UL fire damper label. UL 555 classifies dynamic rated fire dampers for use in HVAC systems that are operational in the event of fire.
The DFD-150X series has a maximum velocity of 4000 fpm (20.3 m/s) up to 24 in. x 24 in. (610mm x 610mm) and 2000 fpm (10.2 m/s) above 24 in. x 24 in. (610mm x 610mm). It has a maximum
Greenheck Fan DFD-150X series is a dynamic rated fire damper with a sleeve that has a 11⁄2-hour fire resistance rating. It is approved for use in walls, floors, and partitions with fire resistance ratings less than 3 hours. This model carries a 11⁄2 hour UL fire damper label. UL 555 classifies dynamic rated fire dampers for use in HVAC systems that are operational in the event of fire.
The DFD-150X series has a maximum velocity of 4000 fpm (20.3 m/s) up to 24 in. x 24 in. (610mm x 610mm) and 2000 fpm (10.2 m/s) above 24 in. x 24 in. (610mm x 610mm). It has a maximum
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