Oatey® Standard Tub Box is used in concrete slabs, wood floors and multi-story flooring to allow access to bath tub plumbing. Tub Box provides a quick, economical, and clean method of installing tub waste and drain. Enables installer to form a clean, waterproof cavity in a concrete slab so a trap can be easily connected to the drain system. Tub Box contains built-in cut-out for 1.5 in or 2 in pipe installation.