[Compatible Models]-- JKLESA 4CH-23 hot tub spa filter replacement compatible with Unicel 4CH-23, Pleatco PFF25TC-P4, PFF25TC-XP4, Filbur FC-2400, Aladdin 12536, Baleen AK-90032, 17-175-1961, Freeflow Lagas FF-100 CLX Claro, Excel Filters XLS-442, PAS-1245, SD-00206 swimming pool spa filters cartridge. [Spa Filter Specifications]-- Length: 6 5/8" , outside diameter: 4 15/16", top: closed handle, bottom: 1 1/2" MPT threaded bottom, filtration area: 25 sq.ft. Filter material: trilobal filtration fabric. JKLESA stands as an independent brand. [High Filtration Performance]-- Innovated "Dirt-Locking" technology makes the fabric traps much more contaminants than regular fabric. This filter efficiently removes hair, leaves, dust, sediment, sand, etc, keeps your hot tub at peak performance. Help you enjoy clean leisure time in your spa and hot tub. [Easy To Clean]-- Our PFF25TC-P4 swimming pool filter adopts trilobal PET fabric makes it washable and reusable, and increase water flow rate which make it much easier to clean the impurities of filter pleats. The frequency of cleaning depends on your use. But when the filtration fabric becomes stained or clogged, you need replace the filter. [High-quality Material]-- Innovated "Dirt-Locking" technology makes the fabric traps much more contaminants than regular fabric. JKLESA FC-9949 spa filter cartridge features Sturdy end caps and center support. JKLESA hot tub spa filter compatible with Unicel 4CH-23, Pleatco PFF25TC-P4, PFF25TC-XP4, Filbur FC-2400, Aladdin 12536, Baleen AK-90032, 17-175-1961, Freeflow Lagas FF-100 CLX Claro, Excel Filters XLS-442, PAS-1245, SD-00206 swimming pool spa filters cartridge. Important Specifications: Diameter: 4 15/16" Length: 6 5/8" Top Hole: Closed Bottom Hole: 1 1/2" Top Style: Closed Bottom Style: MPT Media Area: 25 sqft Compatible Hot Tub Spa & Pool Filters: Aladdin 12536 Baleen AK-90032 Lifesmart 303263 Excel Filters XLS-442 Filbur FC-2400 Freeflow Lagas FF-100 CLX Claro Pleatco PFF25TC-P4, PFF25TC-XP4 Pure N Clean PC-2400 SD-00206 PAS-1245 Unicel 4CH-23 Compatible Hot Tub Spa & Pool Brands: Freeflow Spas Freedom Spas Please check the fitment and product size of your original spa filter carefully before buying to avoid wrong purchase. Replacement suggestions: The frequency of cleaning depends on your use, you can check it regularly, clean it when it is dirty. When the filtration fabric becomes stained or clogged, you need replace the filter. You can search for filter replacement installation videos and cleaning videos on relevant websites for simple DIY replacement and cleaning.