Fire Damper-FD-GB-20-A-AS-B-BS-R

Type: Fire Damper
Fire Rating: 20 Series: 1½ hour
Construction: Galvanized Steel (GI)

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.:Blade Ramp:16 gauge (1.5 mm) thick galvanized steel angle.

Spring:0.3 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 sections are installed.
Sleeve thickness as per NFPA table 3-4.6.3.

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)
Blade: Stainless Steel 22 gauge (304/316L)