Skyvent Flapped Ventilator

Features Include: Tested for a use as a smoke ventilator to BS 7346 Part 1: 1990 Energy efficient & low power usage Very low air leakage when closed Insulated options can attain U-values as low as 0.17W/m2/oK High quality aluminium extrusions provide a robust and durable construction Weatherproof when closed as tested to BS 5368 Parts 1 & 2 Optional aluminium (single skins & insulated), polycarbonate or glazed lids