36 in. L x 36 in. W Alcove Shower Pan Base with Center Drain in Black.This acrylic shower base has dimensions of 36''L x 36''W x 3.5''H, with a center drain diameter of 3.5". Crafted from high-quality eco-friendly Acrylic and ABS, it offers strong resistance to heat, corrosion, and bending, ensuring long-lasting durability. It features a unique non-slip design: the shower base surface is covered with a slate pattern texture, which guarantees a slip-resistant effect and enhances safety during showers. Installation is easy, as an instruction manual is included. Note that this acrylic shower base does not come with a drain set (the drain diameter is 3.5"), so please purchase a suitable drain set separately.