Single Ply Roofing - Fully Adhered - Conventional

Drain sizes to match drain pipe diameters. ROOF DRAINS: Retrofit drain hoppers shall be 2 mm thick seamless spun aluminum and feature a 430 mm (17") diameter flashing flange, 305 mm (12") downspout, membrane stop and clamping ring studs. Drains shall come complete with separable cast aluminum membrane clamping ring, 178 mm (7”) high cast ... ................
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