{"product_id":"75-sq-ft-caledera-spa-filter-insert","title":"75 SQ.FT Caledera Spa Filter insert","description":"\u003cp\u003eThis is a substantial cartridge —\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e14-3\/4 inches tall\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e75 square feet\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof filtering surface — sized for the demands of a full-size Caldera spa. A\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esemi-circular handle\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emolded into the top makes lifting it out effortless, while the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2-inch male slip fitting\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon the bottom seats into the housing connection for a positive seal. The media is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eReemay\u003c\/strong\u003e, whose\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etrilobal\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efibers deliver roughly\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e45% more surface area\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethan standard rounded filter fibers, so it captures more and releases dirt readily when rinsed. Made in the USA.\u003c\/p\u003e\n\u003cdiv class=\"lti-pro-tip\"\u003e\n\u003cstrong\u003ePro Tip:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCheck the bottom fitting — it's the only thing separating this from the C-7375. Both cartridges are\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e75 sq ft with 216 pleats\u003c\/strong\u003e, both measure\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e7 by 14-3\/4 inches\u003c\/strong\u003e, and both have a semi-circular handle on top. The difference is underneath: this\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eC-7479 has a 2-inch male slip fitting\u003c\/strong\u003e, while the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eC-7375 has a 2-11\/16 inch open bottom\u003c\/strong\u003e. Turn your old cartridge over before ordering — that one look settles it.\u003c\/div\u003e","brand":"Dream Hot Tubs Shop","offers":[{"title":"Default Title","offer_id":50388429930733,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/1105\/7133\/files\/Screenshot2026-08-03112151.png?v=1785781337","url":"https:\/\/theshop.dreamhottubs.com\/products\/75-sq-ft-caledera-spa-filter-insert","provider":"Dream Hot Tubs Shop","version":"1.0","type":"link"}