Ready-4-tiles shower base 36''x 48''Can be installed in a corner or alcove and strainer included. Corner real dimension: 33,5/8'' x 37,5/8'' alcove real dimension:33 5/8''x 42'' -Installation and tiling on the same day - build-in slopes -100% waterproof -No-leak guarantee -No need for extra waterproofing product during installation -No deterioration, no mildew caused by water infiltration