15 in Standard Flow Primary Roof Drain

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered for primary roof drainage, this unit features a robust cast iron body with a protective coating to resist corrosion in demanding rooftop environments. The assembly includes a combination membrane flashing clamp and gravel guard to secure roofing materials while preventing debris from entering the drainage system. A low silhouette dome facilitates efficient water flow while minimizing exposure to wind and debris. This drain is fully ASME-, UPC-, and IPC- compliant, ensuring it meets rigorous plumbing standards for commercial and industrial roof applications.