{"product_id":"pentair-cnc-plus-420-replacement-filter-cartridges-4-pack-oem-pleated-media-tool-free-install","title":"Pentair CNC Plus 420 Replacement Filter Cartridges — 4-Pack OEM Pleated Media, Tool-Free Install","description":"\u003cp\u003e\u003cstrong\u003ePentair Pleetco CNC Plus 420 Cartridge 4-Pack is a set of genuine OEM replacement filter cartridges made to restore reliable filtration performance in CNC Plus 420 systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese four authentic Pentair replacement cartridges are manufactured to match the original specifications of CNC Plus 420 filter housings, giving you consistent water flow and long-lasting filtration without guesswork. Because they’re made by Pentair, the fit, material quality, and filtration characteristics align with the OEM design so you can swap cartridges quickly and keep pools, equipment, or water systems running as designed.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these replacement cartridges maintain filtration performance?\u003c\/h3\u003e\n\u003cp\u003eThe CNC Plus 420 cartridges use the same pleated media and construction as the original Pentair parts, restoring the capture area and flow characteristics your system was engineered for. Replacing worn cartridges keeps pressure drops and backwash cycles predictable.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic pleated filter media matched to CNC Plus 420 specifications\u003c\/li\u003e\n\u003cli\u003eConsistent flow and pressure performance after replacement\u003c\/li\u003e\n\u003cli\u003eFour cartridges provide enough swaps for scheduled maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install and service the cartridges?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: remove the used cartridge, rinse or inspect the housing, and drop in the new Pentair cartridge—no special tools required. Regular visual checks and simple rinsing during service keep cartridges performing between full replacements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTool-free cartridge removal and insertion for quick service\u003c\/li\u003e\n\u003cli\u003eMatches OEM dimensions to ensure a sealed fit\u003c\/li\u003e\n\u003cli\u003eIdeal for routine maintenance cycles and quick swaps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat value does the 4-pack offer compared with single cartridges?\u003c\/h3\u003e\n\u003cp\u003eThe four-pack delivers cost savings and convenience—buying multiple cartridges together reduces per-cartridge cost and ensures you have spares on hand for predictable maintenance intervals. It’s a practical choice for owners who prefer to keep replacements ready and avoid downtime.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLower unit price versus purchasing individually\u003c\/li\u003e\n\u003cli\u003eEnough supply for multiple replacement cycles or multiple units\u003c\/li\u003e\n\u003cli\u003eReduces ordering frequency and simplifies inventory management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich systems and users benefit most from these Pentair cartridges?\u003c\/h3\u003e\n\u003cp\u003eThese cartridges are designed specifically for Pentair Pleetco CNC Plus 420 filter systems and are suited to anyone maintaining that model—homeowners, pool technicians, and facility managers. Because they are OEM parts, they’re the straightforward choice when you want to preserve original system performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePerfect fit for CNC Plus 420 filter housings by Pentair\u003c\/li\u003e\n\u003cli\u003eRecommended for scheduled maintenance and mid-season replacements\u003c\/li\u003e\n\u003cli\u003eUseful for property maintenance crews and service professionals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? If you own or service a Pentair Pleetco CNC Plus 420 filtration system and prefer genuine OEM parts to preserve specification, this 4-pack provides a reliable, cost-effective supply of replacement cartridges. It’s ideal for users who value correct fit, dependable filtration characteristics, and reduced maintenance disruptions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these cartridges genuine Pentair replacement parts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. These are authentic Pentair Pleetco CNC Plus 420 OEM replacement cartridges manufactured to original specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace a CNC Plus 420 cartridge?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replacement frequency depends on use and water conditions; many users replace cartridges seasonally or when flow and pressure indicate reduced performance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":54208309952696,"sku":"B08N2X7BDH","price":623.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0636\/7416\/files\/pentair-cnc-plus-420-front-packaging.jpg?v=1790661448","url":"https:\/\/canadianlawn.ca\/products\/pentair-cnc-plus-420-replacement-filter-cartridges-4-pack-oem-pleated-media-tool-free-install","provider":"Canadian Lawn","version":"1.0","type":"link"}