Fire Damper-FD-GB-21-A-AS-B-BS-R
Description
Type: Fire Damper UL- 555 Test Ratings Fire Rating: 1½ hrs. Standard Construction Frame:18 gauge (1.2 mm) thick galvanized steel. Blade: Curtain-type blade made of 22 gauge (0.8 mm) thick galvanized steel. Fusible Link:165°F (74°C). Blade Ramp:16 gauge (1.5 mm) thick galvanized steel angle. Spring:0.3 mm thick by 19 mm wide constant force spring formed from stainless steel. Mounting: Vertical / Horizontal Sleeve: Minimum 0.7 mm, single section is field or factory installed. Optional Fittings Retaining Angles:1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm. Limit Switches: For BMS open/close indication. Transitions (R): Neck adapter for round duct connections. Optional Construction (UL Certification N/A) Frame: Stainless Steel 18 gauge (304/316L) Model: FD-GB-21-A/AS/B/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.Fire Damper-FD-GB-21-A-AS-B-BS-R
Fire Rating: 21 Series: 1½ hour
Construction: Galvanized Steel (GI)
Multiple sections are factory-installed.
Sleeve thickness as per NFPA table 3-4.6.3.
Blade: Stainless Steel 22 gauge (304/316L)