{"product_id":"unicel-c-4326-25-sq-ft-replacement-spa-filter-cartridge-2-pack","title":"Unicel C-4326 25 Sq Ft Replacement Spa Filter Cartridge (2 Pack)","description":"\u003cp\u003eIn this review the Unicel C-4326 cartridge pair is evaluated as a straightforward, dependable replacement for common pool and hot tub filtration needs. It is best for spa and pool owners who want a no-nonsense, affordable cartridge that restores clear water quickly. The single biggest reason to buy is the 25 sq ft of \u003cstrong\u003efilter media\u003c\/strong\u003e spread across 106 pleats, which captures fine particulates down to about 20 microns while allowing good flow and easy cleaning.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 sq ft media:\u003c\/strong\u003e Provides substantial surface area to trap more debris and extend time between cleanings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e106 pleats:\u003c\/strong\u003e Sharp, uniform pleat folds maximize usable surface for dirt capture while minimizing pressure loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReemay polyester material:\u003c\/strong\u003e Durable, chemical-resistant media that balances dirt holding and cleanability for repeated use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen end cap design:\u003c\/strong\u003e 2-1\/8 in ID and rugged plastic end caps make removal and replacement simple and resist chemical damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact dimensions:\u003c\/strong\u003e At 13-5\/16 in length and 4-15\/16 in OD the cartridge fits a wide range of compatible spa and pool housings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe Unicel C-4326 is aimed at owners of hot tubs and smaller pools who need an economical, reliable filter replacement that restores filtration performance quickly. It suits users who perform regular monthly maintenance and want a cartridge that withstands repeated cleanings without rapid degradation.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include owners of very large commercial pools that require specialized high-flow or oversized cartridges, and buyers seeking a washable lifetime filter material beyond polyester Reemay construction.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEffective capture of fine particles to roughly 20 microns, improving water clarity.\u003c\/li\u003e\n\u003cli\u003eGood value as a 2-pack that fits many common spa and pool brands and models.\u003c\/li\u003e\n\u003cli\u003eDurable Reemay polyester media resists chemical wear and cleans up easily.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eThe cartridge must be cleaned regularly to maintain lifespan and performance; it is not a permanent, maintenance-free element.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eUnicel C-4326 (2 pack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia area\u003c\/td\u003e\n\u003ctd\u003e25 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePleats\u003c\/td\u003e\n\u003ctd\u003e106\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e100% polyester Reemay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd cap ID\u003c\/td\u003e\n\u003ctd\u003e2-1\/8 in (open)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eLength 13-5\/16 in, OD 4-15\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Unicel C-4326 2-pack is a practical, cost-effective replacement for many hot tubs and home pools, offering reliable filtration with easy maintenance. Owners who clean their cartridges regularly will find durable \u003cstrong\u003efilter quality\u003c\/strong\u003e and a good balance of flow and debris capture, making it a sensible buy for household spa maintenance.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this fit my spa?\u003c\/strong\u003e\u003cbr\u003eIt fits many common brands listed as compatible; check the 13-5\/16 in length and 2-1\/8 in ID to confirm fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow fine is the filtration?\u003c\/strong\u003e\u003cbr\u003eThe media captures particles down to about 20 microns on average.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow should I clean these?\u003c\/strong\u003e\u003cbr\u003eUse a soft brush or filter cleaner and follow cleaning instructions; regular monthly maintenance preserves lifespan.\u003c\/p\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":48670450548955,"sku":"B01HI26QQE","price":50.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71hAx6XrNmL._AC_SL1500.jpg?v=1778711182","url":"https:\/\/gearmusthave.com\/products\/unicel-c-4326-25-sq-ft-replacement-spa-filter-cartridge-2-pack","provider":"GearMustHave","version":"1.0","type":"link"}