Products / LightMAX Smoke Vent

A UL 793 listed automatic roof smoke vent (model BSVL) with extruded aluminum covers glazed with 5/8 in. structural multi-wall polycarbonate for daylighting, with dome options, in single, double and quad-leaf versions on aluminum or steel curbs with EZ tab counterflash. Gas springs open the covers against a 10 psf snow load, and a rotary latch holds double-door covers against 90 psf and releases through a fusible link (165 F standard) or pull cables; double-door sizes run from 48 x 48 in. to 72 x 96 in.