6 in Roof Drain with Extension Assembly

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered for commercial roofing applications, this primary roof drain features a cast iron body designed for robust water management on flat roof systems. The assembly includes a combination membrane flashing clamp and gravel guard to secure roofing materials while preventing debris from entering the drainage system. An integrated adjustable extension assembly and internal water dam allow for precise height customization and controlled drainage performance. This unit is ASME- certified and UPC- and IPC- compliant, ensuring it meets rigorous North American plumbing standards for infrastructure projects requiring reliable, code-compliant drainage solutions.