WATTS® drainage products ISCA-121 industry standard single vertical adjustable water closet carrier with epoxy coated cast iron fitting, 4 in (102 mm) no hub waste and 2 in (51 mm) no hub vent connections, epoxy coated cast iron patent pending compression seal faceplate assembly, epoxy coated cast iron foot supports adjustable for standard and wheelchair height, adjustable ABS nipple with integral test cap and neoprene bowl gasket, plated hardware and chrome cap nuts. Carrier complies with requirements of ASME A112.6.1M up to a 500 lb (227 kg) static load.