TPO or PVC-Clad Stainless Steel Roof Drain with seamless flashing and drain basin. Heat weld TPO membrane directly to the drain flashing. Comes with strong ABS dome strainer. 2", 3", 4", and 6" sizes available.Seamless BasinTPO or PVC-Clad Stainless Steel Drain2", 3", 4", or 6" bronze fitting.Heavy duty ABS dome strainer10" diameter basinHeat weld directly to the TPO or PVC-Clad drain flashingManufactured 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.