{"product_id":"filbur-fc-2520-spa-and-pool-replacement-filter-cartridge-replaces-13703-4900-144-645544025203","title":"Filbur FC 2520 Spa And Pool Replacement Filter Cartridge Replaces 13703 4900 144 645544025203","description":"\u003cdiv\u003e\n\u003cp\u003eRestore crystal-clear water and peformance in your spa or pool with the Filbur FC-2520 Replacement Filter Cartridge. Designed to fit a wide range of Filbur-compatible housings, this cartridge delivers deeper filtration, easier maintenance, and longer life—even in demanding saltwater and high-chlorine environments. While the model has been discontinued by the manufacturer, its proven design continues to be a trusted choice for keep­ing water fresh, clean, and inviting.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy choose the Filbur FC-2520?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReinforced center cores\u003c\/strong\u003e provide robust support for heavy debris loading and improved pressure resistance, helping prevent cartridge collapse and extend service intervals between cleanings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePremium polyester media\u003c\/strong\u003e delivers durable filtration with lasting cleanliness, supporting clearer water and easier maintenance over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAntimicrobial end caps\u003c\/strong\u003e are reinforced to resist odor-causing bacteria and mold, offering added protection in humid spa conditions and reducing odor concerns in chlorine or salt systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSaltwater and chlorine-resistant formulation\u003c\/strong\u003e helps the cartridge stand up to harsher pool environments, ensuring longer life and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWider support bands\u003c\/strong\u003e improve break-resistance and maintain even pleat spacing for optimal flow, minimizing flutter and preventing bypass.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnd caps with integrated fittings\u003c\/strong\u003e simplify installation and removal, eliminating the need for adapters that can impede flow and filtration efficiency.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEmbossed part numbers\u003c\/strong\u003e make re-ordering a breeze, so you can replace quickly and with confidence.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat makes this cartridge right for you\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for spa enthusiasts and pool owners\u003c\/strong\u003e who want consistent filtration performance—even in saltwater systems or high-chemical environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile compatibility\u003c\/strong\u003e aligns with a broad set of Filbur housings, making it a reliable choice when you’re upgrading or replacing older cartridges.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLonger gaps between cleanings\u003c\/strong\u003e thanks to the reinforced center cores and robust media, helping you spend less time maintaining and more time enjoying your water.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBetter water clarity and flow\u003c\/strong\u003e due to sharp pleat folds that prevent bridging and ensure dirt penetrates deep into the media for effective filtration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for optimal use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCheck compatibility with your specific spa or pool filter housing by comparing embossed part numbers to the FC-2520 references (replaces: 13703, 4900-144, 645544025203, AK-8017, PLE-051-9607, PSR35, UHD-SR35, UNI-60-5221, WC108-55S2X).\u003c\/li\u003e \u003cli\u003eRinse the cartridge thoroughly with pool water during routine maintenance to remove surface debris and extend life between deep cleanings.\u003c\/li\u003e \u003cli\u003eReplace on a schedule that matches your usage and water chemistry to maintain peak filtration efficiency and water clarity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInvest in the Filbur FC-2520 to experience dependable filtration performance, durable construction, and water that feels cleaner and looks brighter—whether you’re relaxing in a spa or entertaining by the pool. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Filbur Manufacturing","offers":[{"title":"Default Title","offer_id":40241544429610,"sku":"FC-2520","price":50.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/4014\/1354\/products\/uhdsr35.jpg?v=1769976125","url":"https:\/\/bathparts.com\/en-um\/products\/filbur-fc-2520-spa-and-pool-replacement-filter-cartridge-replaces-13703-4900-144-645544025203","provider":"Bath \u0026 Spa Superstore","version":"1.0","type":"link"}