{"product_id":"unicelreplacementfiltercartridge75sfdimensiononespas7ch975unf7ch975","title":"Unicel Replacement Filter Cartridge 75 sf Dimension One Spas | 7CH-975","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch2\u003eUnicel 7CH-975 Replacement Spa Filter Cartridge – 7\" OD x 10-1\/2\" Length, 1-1\/2\" SAE Threaded Bottom (Dimension One Style)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Unicel 7CH-975 is a replacement \u003cstrong\u003espa filter cartridge\u003c\/strong\u003e commonly used in \u003cstrong\u003eDimension One\u003c\/strong\u003e and similar hot tub\n    filtration systems that require a \u003cstrong\u003e7\" diameter\u003c\/strong\u003e cartridge with a \u003cstrong\u003esemi-circular top handle\u003c\/strong\u003e and a\n    \u003cstrong\u003e1-1\/2\" SAE threaded bottom connection\u003c\/strong\u003e. Replacing a worn cartridge helps restore circulation, improve water clarity,\n    and reduce strain on spa pumps and heaters.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThreaded bottom connection:\u003c\/strong\u003e 1-1\/2\" SAE (coarse thread) for secure fit in compatible filter canisters\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTop handle:\u003c\/strong\u003e semi-circular handle for easy removal and servicing\u003c\/li\u003e\n    \u003cli\u003eDurable pleated media designed for repeated rinsing and deep-clean cycles\u003c\/li\u003e\n    \u003cli\u003eHelps capture fine debris for clearer water and more consistent flow\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 7CH-975\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 7\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 10-1\/2\" (end cap to end cap; excludes handle\/threads beyond end caps where applicable)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTop End Cap:\u003c\/strong\u003e Semi-circular handle\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBottom End Cap:\u003c\/strong\u003e 1-1\/2\" SAE thread (coarse)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePleat Count (approx.):\u003c\/strong\u003e 216\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFiltration Area:\u003c\/strong\u003e commonly listed around \u003cstrong\u003e52 sq ft\u003c\/strong\u003e (some spa catalogs group this size as a “75 sq ft” class; match by measurements and end style)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReplaces \/ Cross References\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDimension One:\u003c\/strong\u003e 1561-12\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePleatco:\u003c\/strong\u003e PDO75P3\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFilbur:\u003c\/strong\u003e FC-0475\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOther common references:\u003c\/strong\u003e 17527, 70522\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, flattened, or separating from the end caps\u003c\/li\u003e\n    \u003cli\u003eFilter is difficult to rinse clean or quickly plugs up after cleaning\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\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power to the spa before removing the filter.\u003c\/li\u003e\n    \u003cli\u003eThread the cartridge in by hand until it seats; do not overtighten.\u003c\/li\u003e\n    \u003cli\u003eIf your system uses an O-ring or sealing gasket at the housing, inspect and replace if flattened or cracked.\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%207CH-975\"\u003eUnicel 7CH-975 (Shop \/ Options)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Filbur%20FC-0475\"\u003eFilbur FC-0475 (Alternate)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pleatco%20PDO75P3\"\u003ePleatco PDO75P3 (Alternate)\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  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eRinse the cartridge regularly (often weekly with heavy use) to prevent restriction and keep flow strong.\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 filter life and improve overall performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Unicel","offers":[{"title":"Default Title","offer_id":52589962625340,"sku":"7CH-975","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-75-sf-dimension-one-spas-7ch-975-cartridges-7141478.jpg?v=1770393385","url":"https:\/\/aquapoolsupply.com\/products\/unicelreplacementfiltercartridge75sfdimensiononespas7ch975unf7ch975","provider":"Aqua Pool Supply","version":"1.0","type":"link"}