{"product_id":"unicel-c-8465-hot-spring-spa-filter","title":"Unicel C-8465 Hot Spring Spa Filter – 65 Sq Ft | FC-3960 \u0026 PWK65","description":"\u003ch2\u003eUnicel C-8465 Replacement Spa Filter Cartridge — 65 Sq. Ft.\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eUnicel C-8465\u003c\/strong\u003e is a premium \u003cstrong\u003e65-square-foot\u003c\/strong\u003e replacement spa filter cartridge designed for select \u003cstrong\u003eHot Spring Spas\u003c\/strong\u003e, \u003cstrong\u003eTiger River Spas\u003c\/strong\u003e, \u003cstrong\u003eWatkins Manufacturing\u003c\/strong\u003e spas, and certain \u003cstrong\u003eCaldera Spa\u003c\/strong\u003e applications. Unicel upgraded this cartridge from the original 45-square-foot design to 65 square feet of filtration area with 234 pleats, providing enhanced filtration performance while maintaining proper water flow through your spa system.\u003c\/p\u003e\n\n\u003cp\u003eIts 3 oz. filtration media helps capture dirt, body oils, debris, and other contaminants to keep your spa water clean and clear. Customers searching for Filbur \u003cstrong\u003eFC-3960\u003c\/strong\u003e, Pleatco \u003cstrong\u003ePWK65\u003c\/strong\u003e, Watkins\/Hot Spring OEM \u003cstrong\u003e31114\u003c\/strong\u003e, Hot Spring OEM \u003cstrong\u003e71827\u003c\/strong\u003e, Watkins OEM \u003cstrong\u003e71828\u003c\/strong\u003e, or Caldera OEM \u003cstrong\u003e76136\u003c\/strong\u003e may find this to be the compatible replacement.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine Unicel C-8465 replacement spa filter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e65 sq. ft.\u003c\/strong\u003e filtration area — upgraded from the original 45 sq. ft. design\u003c\/li\u003e\n  \u003cli\u003e234 pleats for thorough water filtration\u003c\/li\u003e\n  \u003cli\u003e3 oz. filtration media\u003c\/li\u003e\n  \u003cli\u003e8-1\/2\" outside diameter\u003c\/li\u003e\n  \u003cli\u003e10-1\/2\" length\u003c\/li\u003e\n  \u003cli\u003e3\" open top\u003c\/li\u003e\n  \u003cli\u003e3\" open bottom\u003c\/li\u003e\n  \u003cli\u003eDesigned for select Hot Spring \/ Watkins spa applications\u003c\/li\u003e\n  \u003cli\u003eCross-references FC-3960 and PWK65\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Unicel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e C-8465\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFilter Area:\u003c\/strong\u003e 65 sq. ft.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 8-1\/2\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 10-1\/2\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleat Count:\u003c\/strong\u003e 234\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFilter Media:\u003c\/strong\u003e 3 oz. filtration media\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTop End:\u003c\/strong\u003e 3\" open\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBottom End:\u003c\/strong\u003e 3\" open\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCross-Reference \/ Replacement Part Numbers\u003c\/h3\u003e\n\u003cp\u003eCustomers searching for any of the following part numbers may find this to be a compatible replacement:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnicel:\u003c\/strong\u003e C-8465\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFilbur:\u003c\/strong\u003e FC-3960\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePleatco:\u003c\/strong\u003e PWK65\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWatkins \/ Hot Spring OEM:\u003c\/strong\u003e 31114\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHot Spring OEM:\u003c\/strong\u003e 71827\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWatkins OEM:\u003c\/strong\u003e 71828\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaldera OEM:\u003c\/strong\u003e 76136\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThe Unicel C-8465 is used in select Watkins-family spas including Hot Spring Spas, Tiger River Spas, and certain Caldera Spa applications. Fitment varies by model and year.\u003c\/p\u003e\n\u003cp\u003eBefore ordering, please compare your existing filter’s part number and verify the following dimensions match:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOutside diameter: 8-1\/2\"\u003c\/li\u003e\n  \u003cli\u003eLength: 10-1\/2\"\u003c\/li\u003e\n  \u003cli\u003eTop end: 3\" open\u003c\/li\u003e\n  \u003cli\u003eBottom end: 3\" open\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The current Unicel C-8465 replacement cartridge is rated at \u003cstrong\u003e65 sq. ft.\u003c\/strong\u003e and is an upgrade over the original 45 sq. ft. filter design.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Red Rock Spas?\u003c\/h3\u003e\n\u003cp\u003eRed Rock Spas specializes in hot tubs, replacement spa filters, spa parts, and water-care products. If you’re unsure whether the \u003cstrong\u003eUnicel C-8465\u003c\/strong\u003e is the correct filter for your spa, our team can help you identify the right replacement — just reach out before ordering.\u003c\/p\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":46340613570709,"sku":"120","price":94.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/2142\/2741\/files\/unicel-c-8465-hot-spring-spa-filter-main.jpg?v=1788383307","url":"https:\/\/shopredrockspas.com\/products\/unicel-c-8465-hot-spring-spa-filter","provider":"Red Rock Spas","version":"1.0","type":"link"}