{"product_id":"unicelreplacementfiltercartridge52sfdimensiononespas7ch552unf7ch552","title":"Unicel Replacement Filter Cartridge 52 sf Dimension One Spas | 7CH-552","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch2\u003eUnicel 7CH-552 Replacement Spa Filter Cartridge – 52 Sq Ft (7\" OD x 10-1\/2\" Length, Handle Top, 2\" MPT Bottom)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Unicel 7CH-552 is a replacement \u003cstrong\u003epleated spa filter cartridge\u003c\/strong\u003e commonly used in select \u003cstrong\u003eDimension One (D1)\u003c\/strong\u003e\n    “top load” style filter canisters. It features a \u003cstrong\u003etop handle\u003c\/strong\u003e for easy removal and a \u003cstrong\u003e2\" male pipe thread (MPT)\u003c\/strong\u003e\n    connection on the bottom for a secure, threaded fit in compatible housings. Replacing a worn cartridge helps restore circulation,\n    improve water clarity, 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\u003eNominal filtration area:\u003c\/strong\u003e 52 sq ft (often listed in the 52–55 sq ft class depending on catalog)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTop:\u003c\/strong\u003e handle for quick removal during cleaning\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBottom:\u003c\/strong\u003e 2\" MPT threaded connection for proper seating\/sealing\u003c\/li\u003e\n    \u003cli\u003eDurable pleated media designed for repeated rinse and deep-clean cycles\u003c\/li\u003e\n    \u003cli\u003eDirect-fit replacement when matched by part number and dimensions\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-552\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\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTop End Cap:\u003c\/strong\u003e Handle (closed)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBottom End Cap:\u003c\/strong\u003e 2\" Male Pipe Thread (MPT)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReplaces \/ Cross References\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePleatco:\u003c\/strong\u003e PTL55XW-F2M\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFilbur:\u003c\/strong\u003e FC-0465 (some catalogs also list FC-0477)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDimension One (OEM reference):\u003c\/strong\u003e 1561-10\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\u003e2\" threaded bottom\u003c\/strong\u003e. If your current filter has a slip fitting, different thread size, or a different bottom style, you may need a different model.\u003c\/li\u003e\n    \u003cli\u003eAlways confirm fit by matching the \u003cstrong\u003e7\" diameter\u003c\/strong\u003e, \u003cstrong\u003e10-1\/2\" length\u003c\/strong\u003e, and \u003cstrong\u003e2\" MPT bottom\u003c\/strong\u003e before ordering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePleats are torn, frayed, flattened, or separating from the end caps\u003c\/li\u003e\n    \u003cli\u003eWater stays cloudy or circulation feels weak even after cleaning\u003c\/li\u003e\n    \u003cli\u003eFilter 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%207CH-552\"\u003eUnicel 7CH-552 (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%20filter%20pre-filter\"\u003eSpa Pre-Filters (Fill \/ Hose Filters)\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\u003eRotate between two cartridges when possible—one in use, one drying after cleaning—to extend overall filter life.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Unicel","offers":[{"title":"Default Title","offer_id":46797840416943,"sku":"7CH-552","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/unicel-replacement-filter-cartridge-52-sf-dimension-one-spas-7ch-552-cartridges-2640203.jpg?v=1777068026","url":"https:\/\/freshized.com\/products\/unicelreplacementfiltercartridge52sfdimensiononespas7ch552unf7ch552","provider":"Freshized","version":"1.0","type":"link"}