The tub shall be 60" in length, 30" in width, and 14-1/4" in height for recessed installation, with slip-resistant bathing surface and tiling flange. Tub shall be made of acid-resistant Porcelain Enameled Formed Steel with polymer composite backing. Tub shall have non-recessed overflow hole, and bottom underside leveling legs. Tub shall be Eljer model 018-5000- _ _ (left outlet) or 018-5025- _ _(right outlet).