Pentair 154715 Sand Drain Gasket Replacement Pool and Spa Filter Sand drain gasket replacement Fits Pentair Sand Dollar pool and spa sand filter models SD 35, SD 40, SD 60, SD 70, SD 80 Also fits Pentair Meteor, Cristal-Flo II pool and spa sand filters Measures 1-3/4-inch length by 1/4-inch height by 1-3/4-inch width