4CH-949 Spa Filter Cartridge Upgrade your pool and hot tub experience with the 4CH-949 Spa Filter, designed for compatibility with popular models including Pleatco PWW50L, Unicel 4CH-949, Filbur FC-0172, SD-01143, Waterway 817-4050, and Rising Dragon 50. Key Features: - Dimensions: Height: 13 3/16"; Outside Diameter: 5"; Bottom: 1 1/2" FEMALE SAE. - Compatibility: This filter is designed to fit various spa and pool systems, ensuring optimal performance and cleanliness. - Note: PELLUCID is an independent manufacturer and not an original equipment manufacturer. Easy to Clean: Our innovative Trilobal fabric design allows for superior dirt capture and release, making maintenance a breeze. For best results, scrub the filter every two weeks with a cartridge cleaner tool and rinse thoroughly with a garden hose to keep your water crystal clear and safe for your family. Premium Quality Materials: We prioritize quality and affordability in our pool filters. The Trilobal filter material effectively handles water contaminants, while the durable, chemical-resistant end caps ensure longevity. The solid one-piece construction of the high-quality carbon fiber backbone provides exceptional structural integrity, making this filter a reliable choice for your spa and pool needs.