15 in Primary Roof Drain

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered for commercial water management, this primary roof drain features a heavy-duty cast iron body designed to withstand demanding environmental conditions. The assembly includes an integrated membrane flashing clamp and gravel guard to secure roofing materials while preventing debris from entering the drainage system. A low silhouette dome design facilitates optimal water flow across the roof surface. This unit is ASME- certified and UPC- and IPC- compliant, meeting rigorous industry standards for performance and structural integrity in professional plumbing applications.