Pentair 86202000 1-1/2-Inch Plug Drain Cap with O-Ring Replacement Pool and Spa Filter 1-1/2-Inch plug drain cap replacement Fits Pentair Warrior, EasyClean aboveground pool and spa D.E. filters Also fits Pentair Clean & Clear/Predator, Clean & Clear Plus pool and spa cartridge filters Compatible with Pentair EasyClean, FNS Plus, Warrior pool and spa D.E. filters Measures 2-3/8-inch length by 1-1/4-inch height by 2-3/8-inch width; includes o-ring