OVERVIEWGet your pool back to crystal clear with the Poolzilla Type A or C replacement filter cartridge — the direct-fit replacement for Intex 29000E and 59900E, Easy Set pools, Summer Escapes, and Summer Waves systems. Each cartridge measures 4.25 inches in outer diameter and 8 inches tall with an open 2-inch core top and bottom, matching the OEM footprint so it seats correctly in your pump housing. Densely pleated media gives dirt, hair, leaves, sand, and fine sediment far more surface area to grab onto, so your pump moves water instead of fighting a clogged filter. Molded end caps hold their shape under flow and seal against the canister, forcing water through the pleats instead of letting it slip around the edges.Type A/C cartridges are consumables, not season-long parts. Both Intex and Summer Waves recommend replacing the cartridge roughly every two weeks during active swim season, and rinsing it out between changes to extend its useful life. You'll know it's time when water flow from the return jet weakens, the pleats look gray or stay discolored after a rinse, or the water starts turning cloudy despite balanced chemistry. Running a spent cartridge makes the pump work harder, burns through chlorine faster, and puts unnecessary wear on your motor. Swapping one takes about two minutes: unplug the pump, open the canister, pull the old cartridge, drop the new one in, and reseal. Keep a multi-pack on hand so you're never stuck picking between a dirty filter and a closed pool.WHAT'S INCLUDEDYour order includes the selected quantity of Type A or C replacement pool filter cartridges. Each unit is individually inspected for quality before shipping.