Smoke Hatches

Singe Door hoistway vents are rooftop venting systems for hoistways, elevator shafts, and stairwells that automatically opens, releasing heat, smoke, and noxious fuxmes during a fire. Reference IBC section 3004 for hoistway venting requirements. (Comes standard in red oxide, shown in custom color SteelScape Gray.) Specifications Cover & Liner 14 gauge galvanized steel cover is stiffened to withstand a live load of 40 psf 22 gauge galvanized steel liner Curb 14 gauge galvanized steel, 12" high curb, 3.5" mounting flange, 0.625" diameter mounting holes Latch Zinc-plated steel pyrolatch with 165F fusible link, exterior and interior release handles Spring/Hinge Zinc-plated steel heavy duty tamper proof spring and hinge pack designed to automatically open vent Insulation 1" rigid insulation in cover and at curb perimeter Finish Red oxide powder coat