Thunderbird Products, Inc. 4 in. No-Hub Bottom Outlet Roof Drain with ABS Dome Strainer

Made of strong 20 oz. copper. Sandblasted flashing for great waterproofing membrane adhesion. Seamless flashing and drain basin. Comes with strong ABS dome strainer. 2 in., 3 in. and 4 in. sizes available. Copper outperforms the competition because copper does not rust and does not melt.