4 in High Volume Cast Iron Roof Drain

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered for efficient water management, this high volume roof drain features a robust epoxy coated cast iron body designed for long-term structural integrity. The assembly includes a flashing clamp with an integral gravel stop to secure roofing membranes while preventing debris from entering the drainage system. A self-locking polyethylene dome is included to protect the outlet from blockage. This unit is ASME- certified and UPC- and IPC- compliant, ensuring it meets rigorous plumbing standards for commercial and industrial roof drainage applications.