FD-GBD-20-AS-BS-AF-BF-R

UL- 555 Test Ratings

Fire Rating : 1½ hrs.
Max Velocity : 2000 fpm (for Dynamic Systems)

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.

Blade Ramp

Curtain type blade made of 22 gauge (0.8 mm) thick galvanized steel.

Spring

0.33 mm thick by 19 mm wide, stainless steel constant force spring.

Mounting

Vertical

Sleeve

Minimum 0.7 mm, single section is field or factory installed.
Multiple section is factory installed.
Sleeve thickness as per NFPA table 3-4.6.3.

Optional Fittings

Retaining Angles

1½” x 1½” x 16 gauge (40 x 40 x1.5) 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)
Blade : Stainless Steel 22 gauge (304/316L)

Model : FD-GBD-20-AS/BS/AF/BF/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.