Pack of 3 replacement filters sift dirt and debris out of your pool with your pump; Replacement cartridge measures 5. 6 x 10 inches This Bestway pool filter cartridge is compatible with all Type IV or Type B pool pumps Recommended for 2,500 gallon filter pumps for optimal performance The filter cleans easily, simply take the filter out of the pump and spray off the debris with a garden hose Check your pool filter pump model number to ensure proper fit; Quantity: 3 filters Give your Bestway pool its best performance by using this 3 pack of Bestway Filter Cartridge Type IV / B. Filter the water in your pool to keep it attractive and refreshing all season, it is recommended to change the filter regularly. This shrink wrapped with litho label, direct and brand new from Bestway and is manufactured with Dacron filament media. Reusable filter optional after a hose down cleaning and wouldn't need to be replaced until it shows signs of wear or deterioration Replacement cartridge for: 7,949 L (2,100 gal.); 9,463 L (2,500 gal.) per hour filter pumps