36" Black Shower Base Single-Threshold 36*36in 3.54in tall Shower Base White, Centered Drain and Single-Threshold Note: about 1" difference either negative or positive is possible Drain 3.54in diameter centered drain 3-side intergrated tile flanges, well sealed and prevent water from leaking in daily use 5-layer ABS and acrylic sheet, heavy duty, high-gloss finish, flat and smooth Easy to clean and maintain & to increase safe touch space between your feet and the pan Warm Tip: you may try antislip treads on the base