PVC Membrane Fitting, PVC Construction Drain Flange for Shower Drains,It Works as an Adapter between Floor Drain and Drain Pipe,the shower drain base is durable enough for a long lasting working life The 2 inside diameter rubber seal is designed to connect with 2 No Hub shower drain; While the other side with 2.36 inside diameter is perfect for water pipe connection Easy to Install- Rubber Gasket is Built-in the Drain Flange,Buyers Dont Need to Buy a Rubber Gasket Separately For 2 outlet, Works with all No Hub Floor Drains with 2-inch Outlet ( Outside Diameter),Universally compatible with most 2 drain outlets including Luxe, Kohler, Sioux Chief and Geotop. Attention: This Membrane Coupling with NO HUB CONNECTORS,It Just Fits NO HUB Shower Drain,and It Just Fits Drain Pipe with Maximum Outside Diameter 2.36 Inch.Not be recommended to use with hot-mop membrane. Made of healthy and environmental Material. Heavy and durable. No worry or regret to get it. Contact us if you have any questions about this products.