Hayward large skimmer vacuum plate with 1-1/2-inch straight adapter is designed to fit Hayward Dyna-Skim In-Ground skimmer SP1082, 1084, 1085, 1075 models. By utilizing the skimmer basket instead of the pump strainer basket, the need to turn the pump on and off is eliminated. Simply attach the appropriate Skim-Vac to the vacuum hose located over the skimmer basket and begin vacuuming. It includes a rubber gasket. Measures 8-inch diameter.