{"product_id":"tier1-sundance-spa-filter-cartridge-replacement-2-pack-8-x-4-5-8-in-high-flow-trilobal-media","title":"Tier1 Sundance Spa Filter Cartridge Replacement 2-Pack — 8 x 4-5\/8 in, High-Flow Trilobal Media","description":"\u003cp\u003e\u003cstrong\u003eTier1 Replacement for Sundance Spa Filter Cartridge (2pk) is a direct-fit 8\" x 4-5\/8\" spa cartridge that uses trilobal dirt-lock media to capture more debris while maintaining steady water flow.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen your Sundance spa needs a reliable filter swap, these Tier1 replacement cartridges deliver a balance of improved particle capture, consistent circulation, and straightforward installation. Built to match common OEM dimensions and tested to NSF 50 standards, the two-pack is designed for homeowners who want cleaner water and dependable pump performance without complex maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eWill this cartridge fit my Sundance spa and other common models?\u003c\/h3\u003e\n\u003cp\u003eThese cartridges are manufactured to match the 8\" x 4-5\/8\" specification used by popular OEM parts. They are compatible with equivalents such as Pleatco PSANT20P3, Unicel 4CH-925, Filbur FC-0126, and SD-01036, making them a universal choice for many systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExact dimensions: 8 inches height by 4-5\/8 inches diameter for a reliable seal.\u003c\/li\u003e\n  \u003cli\u003eCross-compatible with listed OEM part numbers for easier replacement shopping.\u003c\/li\u003e\n  \u003cli\u003eSold as a 2-pack so you can replace both filters or keep a spare on hand.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the trilobal dirt-lock media improve filtration?\u003c\/h3\u003e\n\u003cp\u003eThe trilobal fiber construction increases surface area and creates micro-channels that trap finer particles than round fibers. That means more hair, leaves, and sediment are captured while keeping flow resistance low, so your pump and heater can operate efficiently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher capture efficiency—up to 40% more debris versus standard round fibers.\u003c\/li\u003e\n  \u003cli\u003eMaintains water flow to prevent added strain on circulation equipment.\u003c\/li\u003e\n  \u003cli\u003eEffective for both coarse debris and fine particulate matter commonly found in spas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDoes this filter affect pump performance or heater operation?\u003c\/h3\u003e\n\u003cp\u003eNo—these cartridges include a high-flow internal core designed to provide steady circulation without restricting pressure. That engineered core reduces the risk of undue strain that can occur when filters are undersized or overly dense, helping to protect pump longevity and heater function.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-flow core supports consistent water movement through the system.\u003c\/li\u003e\n  \u003cli\u003eBalanced media density prevents pressure spikes that can impact equipment.\u003c\/li\u003e\n  \u003cli\u003eRegular replacement keeps system efficiency optimal and reduces labor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these filters tested and durable?\u003c\/h3\u003e\n\u003cp\u003eTier1 cartridges are independently tested to NSF 50 protocols for performance and durability, giving you a verifiable baseline for quality. Durable construction and stable media integrity mean you can expect consistent filtration between routine cleanings and replacements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNSF 50 testing confirms performance benchmarks for spa filtration.\u003c\/li\u003e\n  \u003cli\u003eRobust pleat construction resists collapse and helps maintain flow.\u003c\/li\u003e\n  \u003cli\u003eDurable end caps and core reduce tear and premature failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Homeowners and service technicians who maintain Sundance and compatible spas and want a cost-effective, performance-focused filter replacement. Choose this 2-pack if you value improved debris capture from trilobal media, cross-compatibility with common OEM part numbers, and an engineered core that protects pumps and heaters. If your priority is straightforward installation, consistent water clarity, and an NSF-tested option, this Tier1 replacement cartridge is a practical upgrade.\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: How often should I replace these Tier1 spa cartridges?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace every 3 months under normal use or sooner if the cartridge shows heavy debris or reduced flow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these cartridges compatible with Pleatco and Unicel models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They replace Pleatco PSANT20P3, Unicel 4CH-925, Filbur FC-0126, and SD-01036 equivalents.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Tier1","offers":[{"title":"Default Title","offer_id":56799285018964,"sku":"B07HCX2YFX","price":85.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/tier1-front-packaging.jpg?v=1786730553","url":"https:\/\/gardenluxe.co.uk\/products\/tier1-sundance-spa-filter-cartridge-replacement-2-pack-8-x-4-5-8-in-high-flow-trilobal-media","provider":"Gardenluxe Uk","version":"1.0","type":"link"}