Heavy Duty Bath Seat with Perineal Cutout, model CQ-1720D, is a bariatric bath seat designed for use by individuals with mobility disabilities. This bath seat has a perineal cutout and fits the contour of a standard bathtub. The frame tubing has vinyl grips to prevent marring the tub. OPTIONS: Floor stand (model 1721) for use in a shower stall. DIMENSIONS (DxW): The seat is 15.25 x 20 inches. The tub must be at least 22 inches wide, measured inside the tub. CAPACITY: 650 pounds.