Plumbers and contractors rely on this tub box for efficient plumbing access in slab construction. Made from durable plastic, it features a top inside diameter of 13 inches and a bottom inside diameter of 11.5 inches, with a depth of 6.5 inches. This design allows for easy installation in concrete slabs, wood floors, and multi-story flooring. Its black finish blends seamlessly with various construction materials, ensuring a clean look while providing essential access to bathtub plumbing.