Combination Fire & Smoke Damper

A combination fire/smoke damper is used when a barrier is both rated for fire resistance as well as designed to restrict the transfer of smoke and will meet both the fire damper and smoke damper requirements. UL 555S ( Frame and blades made of 1.6 mm GI sheet. The blades are connected with concealed linkages. Blade seal and Jamb seal to make air tight seal. Electronic fusible link with closure temperature of 165 ºF(74ºC) (others available