Pentair 98960311 Black Bulkhead Union Set for Clean & Clear Plus Filters Manufactured before 11/98 Bulkhead union replacement kit Fits Pentair Clean & Clear Plus pool and spa cartridge filters Also fits Pentair Eclipse pool and spa sand filters This kit consists of two half unions with both 1-1/2 and 2-inch pipe connections Available in black color; measures 15-inch length by 15-1/2-inch height by 15-1/2-inch width