{"product_id":"unicelreplacementfiltercartridge150sfwaterwayc9403unfc9403","title":"Unicel Replacement Filter Cartridge 150 sf Waterway | C-9403","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch2\u003eUnicel C-9403 Replacement Cartridge Filter\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Unicel C-9403 is a replacement \u003cstrong\u003epleated cartridge filter element\u003c\/strong\u003e designed for select pool and spa cartridge\n    filter canisters. It captures fine debris to help keep water clear while maintaining strong circulation when cleaned and serviced\n    regularly.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eReplacement \u003cstrong\u003ecartridge filter element\u003c\/strong\u003e for compatible filter housings\u003c\/li\u003e\n    \u003cli\u003ePleated media increases surface area for effective particle capture\u003c\/li\u003e\n    \u003cli\u003eHelps support steady flow when kept clean (less strain on the pump vs. a clogged cartridge)\u003c\/li\u003e\n    \u003cli\u003eDurable end caps and core for repeated cleaning cycles\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eBefore You Buy\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMatch by \u003cstrong\u003epart number (C-9403)\u003c\/strong\u003e whenever possible.\u003c\/li\u003e\n    \u003cli\u003eConfirm fit by measuring your existing cartridge:\n      \u003cul\u003e\n        \u003cli\u003e\u003cstrong\u003eOverall length\u003c\/strong\u003e\u003c\/li\u003e\n        \u003cli\u003e\u003cstrong\u003eOutside diameter\u003c\/strong\u003e\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eTop and bottom end-cap style\u003c\/strong\u003e (open, closed, handle, or threaded)\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eInside diameter\u003c\/strong\u003e of any open ends\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eIf your filter uses an internal standpipe, verify the cartridge’s inside opening matches the standpipe size and style.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Signs It’s Time to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePleats are torn, frayed, or separating from the end caps\u003c\/li\u003e\n    \u003cli\u003eCartridge won’t clean up well even after a deep soak and thorough rinse\u003c\/li\u003e\n    \u003cli\u003eFilter pressure rises quickly after cleaning or circulation remains weak\u003c\/li\u003e\n    \u003cli\u003eEnd caps are cracked, warped, or the core is collapsing\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=cartridge%20filter%20cleaner\"\u003eCartridge Filter Cleaner\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=cartridge%20filter%20cleaning%20tool\"\u003eCartridge Cleaning Tools\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=filter%20tank%20o-ring\"\u003eFilter Tank O-Rings \u0026amp; Gaskets\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=filter%20pressure%20gauge\"\u003eFilter Pressure Gauges\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20skimmer%20sock\"\u003eSkimmer Socks (Fine Debris Pre-Filter)\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 when pressure rises about \u003cstrong\u003e8–10 PSI\u003c\/strong\u003e above your clean starting pressure (or when flow drops).\u003c\/li\u003e\n    \u003cli\u003eSpray between pleats from top to bottom and rotate as you clean to remove trapped debris.\u003c\/li\u003e\n    \u003cli\u003eDeep clean periodically to remove oils and scale; rinse thoroughly before reinstalling.\u003c\/li\u003e\n    \u003cli\u003eLet the cartridge dry after deep cleaning when possible—drying helps loosen fine debris for easier rinsing.\u003c\/li\u003e\n    \u003cli\u003eKeep water chemistry balanced to reduce premature clogging and scale buildup.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Unicel","offers":[{"title":"Default Title","offer_id":46797841137839,"sku":"C-9403","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/unicel-replacement-filter-cartridge-150-sf-waterway-c-9403-cartridges-7638753.jpg?v=1777068044","url":"https:\/\/freshized.com\/products\/unicelreplacementfiltercartridge150sfwaterwayc9403unfc9403","provider":"Freshized","version":"1.0","type":"link"}