Check the listing for details. Filters Fast FF-2915 Replacement Swimming Pool Spa Filter Cartridge. Condition: New. Listed at 27.99 USD. This replacement pool and hot tub spa filter cartridge is a testament to efficiency and reliability, meeting the same quality standards as the OEM filters. It’s the compatible replacement for Coleman Spas 100585, compatible replacement for Pleatco PWW40, and compatible replacement for Unicel C-4339. Constructed from durable materials, our swimming pool filter cartridge features a robust structure with 40 square feet of filter media. Replace your filter every 6-12 months for optimum performance. Upgrade your pool experience with our premium pool supplies. Our pool and hot tub spa filter is also compatible with the following part numbers: compatible replacement for Aladdin 14011, compatible replacement for Baleen AK-3016, compatible replacement for Clarathon FC2915, compatible replacement for Coleman Spas 3301-2241, compatible replacement for Filbur FC-2915, compatible replacement for Leisure Bay Spas 817-0040, compatible replacement for Pleatco PWW40, compatible replacement for Spa Daddy SD-00235, compatible replacement for Unicel C-4339. Specifications: Replace your filter every 6-12 months for optimum performanceOur spa hot tub filters feature an open top and 2 1/8 inch bottom with a length of 11-1/4 inchesCovers a surface area of 40 square feet