Keeps your pool water clean and crystal clear Replacement filter cartridge for Type III, Type A/C This replacement cartridge is compatible with all Coleman brand pools with 1,000 GPH and 1,500 GPH pool filter pumps. It's also compatible with 1,000 and 1,500 GPH Bestway swimming pool filter pumps Easy to clean and replace; Recommended to change your filter every 2 weeks Shrink-wrapped with insert card; Dimensions (L x W x H): 8 x 4 x 8 inches; Contents: 1 filter cartridge Give your Coleman swimming pool pump its best performance by using the Coleman Filter Cartridge Type III A/C. This filter cartridge sifts out the debris and dirt in your above-ground swimming pool so the pump can refill it with clean pool water. It's recommended you replace your filter cartridge every few weeks to ensure your pool obtains the highest standard of cleanliness and hygiene. When you maintain your pool's filter, the water in your pool stays attractive and fresh all summer long, which makes it all the more enjoyable for your family and friends. This replacement cartridge is compatible with all Coleman brand pools with 1,000 GPH and 1,500 GPH pool filter pumps (listed below). It's also compatible with 1,000 and 1,500 GPH Bestway swimming pool filter pumps. Coleman Power Steel Round Frame Pools compatible with Coleman Filter Cartridge: Part number 90337 (14 feet x 42 inches) 90321 (16 feet x 48 inches) 90323 (18 feet x 48 inches) 90331 & 13889 (22 feet x 52 inches) 90338 (26 feet x 52 inches) 90335 (18 feet x 9 feet x 48 inches)