Made of strong 20 ounce sandblasted copper for great membrane adhesion. Seamless flashing and drain basin. Second pipe fitting for overflow application. Comes with strong plastic dome strainer. 2", 3", 4", and 6" outlet sizes available. Copper outperforms the competition because copper does not rust and does not melt.Area roof drain with built in overflow drain20 ounce copper, 10" diameter seamless basinSandblasted for excellent membrane adhesionSecond pipe and fitting for overflow application (2" raised pipe)2", 3", 4", or 6" bronze no hub fittingPlastic dome strainerManufactured in the USA by Thunderbird ProductsNote on Fittings: Two types of fittings are available. A threaded adapter fitting is used primarily with 2" PVC pipe applications. The threads on the bronze fittings are male and can be attached to a threaded female PVC adapter. A no-hub fitting is the standard fitting used in the industry. With this fitting a rubber coupling is used to connect the drain to the drainage pipe.