{"product_id":"poolpure-spa-filter-cartridges-c-6430-5-pack-10-5-replacement-50-micron-trilobal-fabric-for-clearer-water","title":"POOLPURE spa filter cartridges C-6430 5-Pack — 10.5\" replacement, 50-micron trilobal fabric for clearer water","description":"\u003cp\u003e\u003cstrong\u003ePOOLPURE C-6430 is a 10.5\" replacement spa filter cartridge (5-pack) built with trilobal filtration fabric to capture fine particles and maintain clearer spa water.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeep your hot tub or small pool running efficiently with a set of five POOLPURE C-6430 replacement cartridges. Engineered to match common OEM dimensions, these cartridges fit models listed under Watkins 31489, PWK30, Unicel C-6430, and Filbur FC-3915. Each cartridge uses trilobal filtration fabric for greater surface area, tested to NSF\/ANSI 50 standards, and is designed for simple monthly maintenance to preserve flow and water clarity.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these cartridges improve spa water clarity?\u003c\/h3\u003e\n\u003cp\u003eThe trilobal fabric increases effective surface area so more debris is captured without restricting flow. With a 50-micron precision rating and 30 square feet of filtration area, the cartridges trap hair, sand, pollen, and fine sediment that cloud water.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e30 sq. ft. filtration area per cartridge for expanded capture capacity\u003c\/li\u003e\n  \u003cli\u003e50-micron precision removes fine particles that typical coarse filters miss\u003c\/li\u003e\n  \u003cli\u003eTrilobal fabric reduces back pressure for steady pump performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these fit my existing spa or pool filter housing?\u003c\/h3\u003e\n\u003cp\u003eThese POOLPURE C-6430 cartridges are sized to match common OEM part numbers and measurements: 10 1\/2\" length, 5 7\/8\" outer diameter, and 1 15\/16\" top\/bottom openings. They're compatible with Watkins 31489, PWK30, Unicel C-6430, Filbur FC-3915 and several related part numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect dimensions: 10.5\" L, 5 7\/8\" OD, 1 15\/16\" openings\u003c\/li\u003e\n  \u003cli\u003eCross-references: Watkins 31489, PWK30, Filbur FC-3915, Unicel C-6430\u003c\/li\u003e\n  \u003cli\u003eSold as a 5-pack for multiple replacements or spares\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I clean and maintain these replacement cartridges?\u003c\/h3\u003e\n\u003cp\u003eThe trilobal fabric is designed to release trapped dirt more easily during rinsing, so monthly cleaning is typically sufficient depending on use. Avoid backwashing; these cartridges are not constructed for backwash procedures and could crack if treated that way.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRinse with a garden hose perpendicular to pleats to remove debris\u003c\/li\u003e\n  \u003cli\u003eUse a cartridge cleaner soak periodically for deeper cleaning\u003c\/li\u003e\n  \u003cli\u003eDo not backwash—risk of damage and decreased lifespan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat certifications and performance assurances does POOLPURE provide?\u003c\/h3\u003e\n\u003cp\u003ePOOLPURE C-6430 cartridges are NSF\/ANSI 50 certified for material safety and filtration precision, and the brand participates in Pool \u0026amp; Hot Tub Alliance standards. These credentials reflect independent testing for consumer safety and functional performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNSF\/ANSI 50 tested for safe materials and filtration precision\u003c\/li\u003e\n  \u003cli\u003ePHTA membership aligns products with industry best practices\u003c\/li\u003e\n  \u003cli\u003eReal-world use and media testing demonstrate consistency under heavy use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The POOLPURE C-6430 5-pack is ideal for spa and small pool owners who need an affordable, certified replacement that matches common OEM sizes. Choose this kit if you want a simple swap-in option that improves debris capture, reduces pump back pressure, and keeps a spare supply on hand for scheduled maintenance or frequent use.\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 POOLPURE cartridges compatible with Filbur FC-3915?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The C-6430 matches Filbur FC-3915 dimensions and fits as a compatible replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I clean these spa filters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Clean monthly under normal use; more frequently if the spa sees heavy debris or frequent use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"POOLPURE","offers":[{"title":"Default Title","offer_id":56844264833364,"sku":"B08DD21GB7","price":146.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/poolpure-c-6430-front-packaging.jpg?v=1787084916","url":"https:\/\/gardenluxe.co.uk\/products\/poolpure-spa-filter-cartridges-c-6430-5-pack-10-5-replacement-50-micron-trilobal-fabric-for-clearer-water","provider":"Gardenluxe Uk","version":"1.0","type":"link"}