SlimLine 42 in. L x 42 in. W Single Threshold Alcove Shower Pan Base in White with Center DrainThe model measures 42 in. in depth, 42 in. in width, and has a height of 2 3 4 in. The base is a single threshold design (for use in a 3 wall alcove) with a center drain (located along the width; refer to technical drawing for exact placement). It comes in a white color and must be installed directly onto studs (unfinished walls must be prepared beforehand with backerboard, cement board, etc). The Slipgrip floor surface promotes slip resistance for