- Frank pattern Combination Roof Drain with overflow drain and flashing area in one unit. For use on flat built-up roof systems, where water can collect to facilitate water drainage. Drain unit consists of cast iron main body, flashing rings, leaf guard and strainer domes. Flashing ring secured to main body with stainless steel fasteners. No Hub outlets.
- DESIGN FEATURES For use on flat roofs as a primary drain· and an overflow connection to prevent overflow conditions. Cast iron membrane clamps to both roof· and overflow drains Removable twist-off strainer domes· Leaf guard ring flashing· Stainless steel fasteners·