WebThe Type-C fire damper is generally used where velocities are medium to high and free area is a consideration. Type-C dampers can be ordered with low pressure (less than 3” w.c.) medium/high pressure (from 3” w.c. up to 10” w.c.) or high pressure ( 10” w.c.) pressure ratings. WebModel OFD-150 is a static rated out of wall fire damper for use in HVAC systems that are automatically shut down in the event of a fire. This fire damper is rated for use in walls or partitions with less than 3 hour fire resistance rating and can be mounted vertically or horizontally. Removal of grille allows access to the damper and fusible ...

FD-150X Series, R18, November 2024 - Greenheck-USA

Web250°F (121°C), 350°F (177°C) Construction Model GFSD-211 meets the requirements for fire dampers, smoke dampers and combination fire smoke dampers established by: National Fire Protection Association NFPA Standards 80, 90A, 92, 101, & 105 IBC International Building Codes CSFM California State Fire Marshal Fire Damper Listing … WebFire dampers are UL 555 classified with a fire resistance rating of 1½ or 3 hours. Fire dampers fall into two categories: Dynamic rated – used with HVAC systems that remain … bird songs identification hermit thrush

DFD-150, R22, March 2024 - Greenheck-USA

Web2 hour UL fire damper label. UL555 classifies dynamic rated fire damper for use in HVAC systems that are operational in the event of fire. Ratings Construction UL 555 Fire … WebFire dampers are UL555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems, designed to close upon the detection of heat. Products Access Doors WebCSFM California State Fire Marshal Fire Damper Listing (#3225-0981:0103) Leakage (Smoke) Damper Listing (#3230-0981:0104) *only availabe with fusible link Note: The frames are constructed with reinforced corners. Low profile head and sill are used on sizes less than 17 in. (432mm) high for lower pressure drop and improved damper … birdsong shirt