A complete, easy to install waterproofing system for maintenance-free tiled showers. Centered drain. 48 in x 48 in. Includes prefabricated sloped shower tray that replaces the need for a mortar bed, shower curb, "Prova" mat 135 sq. ft, "Prova" mat floor panel, joint strip 5 in x 33 in, corner seals (4 interior + 2 external), adjustable pipe seal 4 in x 4 in, drain and grate.