Water closet carriers will not be found in the carrier code book because the majority of water closets use a standard 4 bolt pattern that measures 9" by 7 1/2". Fixtures with this bolt pattern can use the Z1203, Z1204, Z1207, Z1208, Z1209 and Z1212 carriers and their variations. If the carrier is a blowout (3 bolt) style, use the -B option for the desired water closet carrier.