Check the listing for details. Filters Fast FF-0121 Compatible Replacement Pool and Spa Filter Cartridge. Condition: Open box. Listed at 37.95 USD. This compatible 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 Hayward C-1200, CX1200-RE and compatible with a variety of part numbers, offering a hassle-free experience. Constructed from durable materials, our swimming pool filter cartridge features a robust structure with 125 square feet of filter media. 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 22002, 22002SVP. Compatible replacement for Baleen AK-7005, compatible replacement for Clarathon FC1293, compatible replacement for Excel XLS-802, compatible replacement for Filbur FC-1293, compatible replacement for Harmsco H-8412, compatible replacement for Hayward C-1200RE, compatible replacement for Leslie's Pool Supplies 304147, 46191, compatible replacement for Magnum HW1200, WW125CW, WW125PC8412. Compatible replacement for Neptune 8R8121. Compatible replacement for Pleatco PA120, PA120-4, PA120/-M/-4, PWWCT125, PWWCT125/-M/PC125/-M/-. Compatible replacement for PorpoisePP-B2-M. Compatible replacement for Proclean 817-0125N, 817-0125P. Compatible replacement for Pure N Clean PC1293, compatible replacement for Spa Daddy SD-00105, SD-00722. Compatible replacement for Spa Depot FC1293. Compatible replacement for Unicel C-8412. Compatible replacement for Waterway 25230-0125S, 817-0125NB, CX1200-RE. Compatible replacement for Yunda H&H PLF120A. Specifications: Replace your filter every 6-12 months for optimum performanceOur spa hot tub filters feature a 4 inch top and 4 inch bottom, diameter of 8 15/16 inches and length of 23 5/16 inchesCovers a surface area of 125 square feet