The clearest water in the world is right in your backyard. With Sunset Filters, you can keep your pool cleaner for longer. Our Type A and C pool filter replacement cartridges are reusable and easy to wash, and they keep your swimming pool purer than your average pool pump. <br> <br>Take a dip in your above-ground pool knowing that you won’t have to change your pool pump filter for another 2-3 weeks. Swimming has never been smoother.