Say goodbye to murky pool water with the Intex Filter Cartridge A! To maintain that crystal-clear Caribbean paradise in your backyard, swap out your pump's filter regularly. Give it a quick rinse weekly, swap it out every 4 weeks (especially if you're making a splash daily), and remember, always power down the pump before the switcheroo! This filter fits perfectly with Intex filter pumps like 28603, 28604, 28637, and other models. Dive into clean, refreshing waters every time!