Goodyo 36x36 in Shower Base, Centered Drain Single-Threshold Shower Pan, White D163148184Dimension: 36L x 36W x 3. 35''H, Center Drain, No Drain Set. The diameter of the drain is 3. 35" 3 side intergrated tile flanges, well sealed and prevent water from leaking in daily use Unique Non slip Design: Shower basin with special surface treatment and anti slip effect. 5 layer ABS and acrylic sheet, heavy duty, high gloss finish, flat and smooth; easy for cleaning. Easy Installation: Instruction is also included. The installation is simple.