Ensure to keep your pool water clean and crystal clear all summer long. With the Bestway Replacement Filter Cartridge, cleaning and maintenance work is made clean. This specific replacement cartridge measures 5.6 inches long by 10 inches tall and is designed for filter pumps that utilize Type IV or Type B cartridges. Equipped to sift out the debris and dirt in your above-ground swimming pool, this filter allows the pump to refill your pool with cleaner water. 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. Ensure the long life of your backyard swimming pool and filter pump by replacing the filter regularly. For best performance, it's recommended to replace your pool filter cartridge once every 2 weeks. With the Bestway Filter Cartridge and proper upkeep, your pool can last year after year.