{"product_id":"unicel-c-7465-65-sq-ft-sundance-6540-480-spa-filter","title":"Unicel C-7465 | 65 sq ft Sundance 6540-480 Spa Filter","description":"\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUnicel C-7465\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a 65 square foot replacement cartridge for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSundance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003espas fitted with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1-1\/2\" system\u003c\/strong\u003e, replacing OEM part number\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e6540-480\u003c\/strong\u003e. It carries\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e164 pleats\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacross a wide 7-1\/2\" body, with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eclosed castle top\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— a sealed end cap with a crenellated, notched rim — and an open\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2-1\/16\"\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebottom that seats over the suction fitting.\u003c\/p\u003e\n\u003cp\u003eThat 2-1\/16\" bottom opening is the single most important number on this page, because it is the\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eonly\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003ething separating this cartridge from its near-twin. Sundance built the same 65 square foot filter in two versions to suit two different plumbing sizes. Both share the same capacity, the same 164-pleat count, the same 7-1\/2\" diameter, the same 14-3\/4\" length, the same 3 oz media, and the same castle top. They are visually indistinguishable.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eOnly the bottom opening differs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— and the OEM part numbers differ by a single digit, which is exactly how people end up with the wrong one.\u003c\/p\u003e\n\u003cp\u003eThis particular cartridge is also a piece of spa history. The 1-1\/2\" system was used on Sundance spas built between roughly\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1985 and 1990\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— Cabaret, Cameo, Liberty, Los Cabos, Mardi Gras, Marin, Royale, Supra, and Supra Lounger. If you are shopping for this filter, you are keeping a spa going that is now well past thirty years old, and doing it with a cartridge built to the original specification rather than a compromise.\u003c\/p\u003e\n\u003cp\u003eUnderneath, this is standard Unicel construction:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3 oz Reemay polyester\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emedia over a solid molded core, with chemical-resistant end caps machined to an exact OEM fit. Made in the USA by Meissner Manufacturing, with more than 45 years behind the Unicel name.\u003c\/p\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003ePro Tip — measure the bottom opening before you order. It is the only thing that matters here.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSundance made two versions of this 65 square foot filter: this one with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2-1\/16\" bottom for 1-1\/2\" systems\u003c\/strong\u003e, and another with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2-5\/8\" bottom for 2\" systems\u003c\/strong\u003e. Everything else about the two is identical — same capacity, same pleat count, same diameter, same length, same castle top. The OEM numbers are\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e6540-480\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e6540-481\u003c\/strong\u003e, one digit apart, and every aftermarket cross-reference follows the same one-digit pattern. Put a tape measure across the inside of your old cartridge's bottom opening. That single measurement settles it, and it is far more reliable than reading a worn part number.\u003c\/p\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\n\u003cp\u003e\u003cspan role=\"img\" aria-label=\"®\"\u003eUNICEL®\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":48990328455286,"sku":"jgb1791796881088","price":53.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/7076\/5174\/files\/unicel-c-7465-65-sq-ft-sundance-6540-480-spa-filter_1.jpg?v=1791796887","url":"https:\/\/nexovella.com\/products\/unicel-c-7465-65-sq-ft-sundance-6540-480-spa-filter","provider":"Nexovella","version":"1.0","type":"link"}