Watts Drainage ISCA-101-D Industry Standard back-to-back horizontal adjustable water closet carrier with epoxy coated cast iron fitting, 4 in(102mm) no hub waste and 2 in(51mm) no hub vent connections, epoxy coated cast iron patented 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 300 lb. (136 kg.) static load.