3 in Parabolic Dome Roof Drain with Gravel Guard

SPECIAL ORDER ITEM. Review Returns Policy before purchase. Engineered to evacuate water from roof structures, this drain features a smooth, funnel-shaped interior surface that provides a transition to the outlet connection while eliminating internal obstructions. The assembly includes a cast iron body with a protective coating, a combination membrane flashing clamp, and a low-profile dome. The integrated gravel guard prevents debris from entering the drain system while allowing water to pass through at zero head level. This unit is ASME- certified and compliant with UPC- and IPC- standards, ensuring reliable performance for commercial roofing applications. The dome design maximizes the effective open area to promote efficient water flow.