6' X 8' Pre-Cut Shower Pan Membrane with 2 Inside and 2 Outside Corners included. 40 Mil Waterproofing Membrane for installation under 'thick bed' custom ceramic tile and stone shower installations.Easily formed to fit any dimension or drain location. Durable and long lasting. Can be seamed with Compotite Weld-Tite Flexible Vinyl Cement for larger applications. Inside and Outside Corners INCLUDED for ease of installation.