Fire & Safety(Building Dampers)
Motorized Fire Damper UL-555

Fire Dampers – UL 555 1-1/2 Hrs Fire Rating

Motorized Fire Dampers–UL 555 3 Hrs Fire Rating

Motorized Fire Damper – UL 555 – 1.1/2 Hrs Rated – with Melting Fuse

Motorized Fire Dampers–UL 555 With Melting Fuse 3 Hrs Fire Rating