Water-Tite 83302

Injection molded, high impact plastic Pipe knock outs compatible with 1-1/2 to 2 in pipe For use in concrete slab, wood floors, to Multi-stay construction Bottom panel scored for easy breakout 14-1/2 x 14-1/2 in top od Furnish and install Water-Tite heavy duty tub box to create access for tub trap and drain in slab foundation No chiseling of concrete is required, simply invert box over drain rough, pour slab and cut out box bottom prior to tub installation