Endura 394713 12-Inch by 12-Inch by 6-Inch PVC Floor Sink for Standard Floor with 4-Inch Hub For use with a standard concrete slab floor 12-Inch by 12-Inch by 6-Inch, 4-Inch Hub Suitable for use in commercial, industrial and residential applications where water and other fluids must be removed PVC surface is smooth, for easy cleaning, will not chip, rust or corrode IAPMO approved