Type : Fire Damper
Fire Rating : 20 Series: 1½ hour
Construction : Stainless Steel (SS)
Fire Rating : 1½ hrs.
20 gauge (0.9 mm) thick stainless steel.
Curtain type blade made of 22 gauge (0.8 mm) thick stainless steel.
16 gauge (1.5 mm) thick stainless steel angle.
0.3 mm thick by 19 mm wide, stainless steel constant force spring
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.
1½” x 1½” x 16 gauge (40 x 40 x 1.5) mm.
For BMS open / close indication.
Neck adapter for round duct connections.
Model :FD-SB-22-A/B/AS/BS/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.