Watts RD-304-D-K40 - Part of the RD-300 Series Strip Drian Membrane clamp suited for integration

Membrane clamp suited for integration under planter beds or green roof systems

It features an epoxy-coated cast-iron body with an anchor flange and dual weepholes for seepage capture

50GSM: General-use woven geotextile with excellent resistance to environmental conditions

The Watts RD-300-W is a medium-area roof drain designed for primary drainage where a wide flange is required for secure membrane attachment

Crafted from high-quality woven polypropylene yarns

Watts RD-304-D-K40 - Part of the RD-300 Series Strip Drian Membrane clamp suited for integrationThis Watts Drains epoxy coated, cast iron, high volume roof drain features a flashing clamp with an integral gravel stop, a self locking ductile iron low dome, 137 square inches of free area, an underdeck clamp and a 4 inch no hub outlet. Features Cast iron Ductile iron low dome 4 inch no hub Underdeck clamp Specifications Body Material Cast Iron Brand Watts Buy American Act Compliant NO FreeArea 137 IN Lead Free Not In Scope Outlet Connection Size 4