Blade Fire Damper › › ›
Model FDB-3V is a multi-blade fire damper with triple-Vee blades. The FDB-3V has been qualified to 2000 fpm (10.2 m/s) the dynamic closure Pressure Rating is 6 in-Wg (1.5kPa) in the duct, the Fire Resistance Rating is 3 hr, It may be used for the fire wall, dividing wall (the brick wall or the gypsum board).
- UL 555 Ratings；Maximum Dynamic Closure Velocity 2000fpm (10m/s)、Pressure 6.0 in. WC(1.5kPa).
- Fire Resistance Rating：3HR，Fuse Link：160℉~350℉ (71℃~177℃).
- Maximum Size：36″x36″(914mmx914mm).
