VL120 3L - Multi blade smoke evacuation damper 120' with 3 blades

Multi blade smoke evacuation damper with a minimum fire resistance of 120 minutes. The damper is made out of fire resistant gypsum boards and equipped with a Belimo BR-motor with BSIA-module to operate the damper with an electrical impulse or a power interruption. Smoke evacuation shutters and dampers are suitable for use in ventilating protected lobbies, venting to shafts either naturally or mechanically. They open to evacuate smoke in emergency situations whilst maintaining fire resistant integrity in standby position.