15 in Heavy-Duty Primary Roof Drain

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered for primary roof drainage, this unit features a durable cast iron body with a protective coating to resist corrosion in harsh exterior 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 poly-dome is included to facilitate water flow while maintaining a compact profile. This drain is ASME- certified and meets UPC- and IPC- compliance standards for professional plumbing installations, ensuring reliable performance for commercial and industrial roofing applications.