{"product_id":"unicelreplacementfiltercartridge60sfjacuzzipremiumspas6ch961unf6ch961","title":"Unicel Replacement Filter Cartridge 60 sf Jacuzzi Premium Spas | 6CH-961","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch2\u003eUnicel 6CH-961 Replacement Spa Filter Cartridge – 60 Sq Ft (Jacuzzi Premium J-300 \/ J-400 Style)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Unicel 6CH-961 is a \u003cstrong\u003e60 sq ft\u003c\/strong\u003e pleated replacement spa filter cartridge commonly used in select\n    \u003cstrong\u003eJacuzzi Premium\u003c\/strong\u003e spa systems (including many \u003cstrong\u003eJ-300\u003c\/strong\u003e and \u003cstrong\u003eJ-400\u003c\/strong\u003e series setups). It features a\n    \u003cstrong\u003e6-3\/4\" outside diameter\u003c\/strong\u003e body, a \u003cstrong\u003e15-1\/2\" length\u003c\/strong\u003e, an \u003cstrong\u003eopen\/slotted top\u003c\/strong\u003e, and a\n    \u003cstrong\u003e2\" male SAE (coarse) threaded bottom\u003c\/strong\u003e connection for a secure, threaded fit in compatible filter canisters.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e60 sq ft\u003c\/strong\u003e filtration area for strong debris capture and clear water\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBottom connection:\u003c\/strong\u003e 2\" male SAE coarse thread for secure installation\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTop:\u003c\/strong\u003e open\/slotted style for proper flow-through design in compatible housings\u003c\/li\u003e\n    \u003cli\u003eDurable pleated media and rigid core built for repeated rinsing and deep-clean cycles\u003c\/li\u003e\n    \u003cli\u003eIdeal replacement when the original cartridge is torn, flattened, or no longer cleans up effectively\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 6CH-961\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFiltration Area:\u003c\/strong\u003e 60 sq ft\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 6-3\/4\" (6.75\")\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 15-1\/2\" (15.5\")\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTop End:\u003c\/strong\u003e Open \/ slotted style\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBottom End:\u003c\/strong\u003e 2\" male SAE thread (coarse)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReplaces \/ Cross References\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJacuzzi Premium:\u003c\/strong\u003e 6541-383 (also commonly listed as 6540-383 depending on catalog)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePleatco:\u003c\/strong\u003e PJW60TL-OT-F2S\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFilbur:\u003c\/strong\u003e FC-2715\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTier1:\u003c\/strong\u003e PAS-1342\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCompatibility Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThis cartridge uses a \u003cstrong\u003ethreaded\u003c\/strong\u003e bottom connection (SAE coarse). If your existing filter has a slip fitting, different thread size, or a closed\/handled top style, you may need a different cartridge.\u003c\/li\u003e\n    \u003cli\u003eSome Jacuzzi-style canisters use an \u003cstrong\u003einjection-molded top handle\/cap piece\u003c\/strong\u003e that transfers from the old filter and is \u003cstrong\u003enot included\u003c\/strong\u003e with the cartridge—confirm your current setup before ordering.\u003c\/li\u003e\n    \u003cli\u003eBest practice: match the part number and confirm the \u003cstrong\u003e6-3\/4\" OD\u003c\/strong\u003e, \u003cstrong\u003e15-1\/2\" length\u003c\/strong\u003e, and \u003cstrong\u003e2\" male SAE threaded bottom\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eWater stays cloudy or circulation feels weak even after cleaning\u003c\/li\u003e\n    \u003cli\u003ePleats are torn, frayed, or separating from end caps\u003c\/li\u003e\n    \u003cli\u003eCartridge quickly plugs up again after rinsing\u003c\/li\u003e\n    \u003cli\u003eEnd caps or threaded connection are cracked\/warped and won’t seal properly\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Unicel%206CH-961\"\u003eUnicel 6CH-961 (Shop \/ Options)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=spa%20cartridge%20filter%20cleaner\"\u003eSpa Cartridge Filter Cleaner\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=cartridge%20cleaning%20wand\"\u003eCartridge Cleaning Wand\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=spa%20water%20test%20strips\"\u003eSpa Water Test Strips\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=spa%20scale%20remover\"\u003eSpa Scale Remover\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=spa%20pre-filter%20hose\"\u003eSpa Fill \/ Hose Pre-Filters\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eRinse the cartridge regularly (often weekly with heavy spa use) to prevent restriction and keep jets performing well.\u003c\/li\u003e\n    \u003cli\u003eDeep clean every 3–6 weeks with a cartridge cleaner to remove oils; rinse thoroughly before reinstalling.\u003c\/li\u003e\n    \u003cli\u003eIf scale is present, degrease first, then treat for scale (never reverse the order), and rinse completely.\u003c\/li\u003e\n    \u003cli\u003eRotating between two cartridges (one in use, one drying after cleaning) can extend overall filter life and improve filtration.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Unicel","offers":[{"title":"Default Title","offer_id":52589962559804,"sku":"6CH-961","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/unicel-replacement-filter-cartridge-60-sf-jacuzzi-premium-spas-6ch-961-cartridges-9117679.jpg?v=1770393387","url":"https:\/\/aquapoolsupply.com\/products\/unicelreplacementfiltercartridge60sfjacuzzipremiumspas6ch961unf6ch961","provider":"Aqua Pool Supply","version":"1.0","type":"link"}