Give your Bestway pool its best performance by using the Bestway Filter Cartridge Type IV / B. Keep your pool clean and refreshing all season with this 4-pack of replacement filters. These cartridges are replacements for filters that pump 2,100 to 2,500-gallons per hour. A reusable design features sturdy filtration that's quickly refreshed when they're sprayed down with a hose. Change your filters once there are signs of wear and deterioration. Built with Dacron filament media, these Bestway filters partner with your pool care routine for fresh, clean swimming, lap after lap. Replacement cartridge for: 7,949-liter (2,100-gallon) and 9,463-liter (2,500-gallon) per hour filter pumps. Have a summer splash with this 4-pack of the Bestway Swimming Pool Filter Replacement Cartridge Type IV or Type B.