2 Pieces Spa Filter Cartridge, for Pleatco Pww50 Hot Tub Filterspa Filter for Unicel 6ch-940/jacuzzi Spa Business Whirlpool Replacement FilterSwimming Pool Filter: 100% Polyester Fiber Material, Better Dust Collecting Ability, Replacement Filter for Swimming Pool and Spa Cleaning SystemProduct Size: Swimming Pool Filter Diameter: 150Mm / 5.9In ; Height: 241Mm / 9.5In; Thread: 46.5Mm / 1.8InchProduct Features: Swimming Pool Filter Collapsible Design Increases The Filter Area, Small Pressure Difference, Large Flow Rate, Long Use Time, Can Be Cleaned and Saves Costs.Product Compatibility: The Pool Filter Is Compatible with Most Indoor and Outdoor and Above Ground Pools, Indoor and Outdoor Hot Tubs and Hot Tubs.Perfect Job: The Filters Of Pool Are Essential to Keep Lay-Z-Spa In top Working Order. Simply Connect It to Your Spa and It Will Filter Dirt and Grime From The Water to Keep It Clean and Healthy.