{"product_id":"unicel-c-4950-50-sq-ft-spa-filter-cartridge-2-pack-clear-water-fit","title":"Unicel C-4950 50 sq ft Spa Filter Cartridge 2-Pack - Clear Water Fit","description":"\u003cp\u003eOur review of the Unicel C-4950 replacement filter cartridges finds them best for hot tub and small pool owners who want reliable, no-frills filtration that keeps water clear without fuss. The two-pack supplies 50 sq ft of 3-ounce Reemay media per cartridge with 212 pleats, designed to trap particles down to about 20 microns. For anyone who values easy fitment, durability against chemicals, and straightforward maintenance, this cartridge delivers consistent performance and good value compared with single replacements.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 square feet media:\u003c\/strong\u003e Provides ample surface area to capture dirt and debris, reducing how often you need to clean the cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e212 pleats, sharp folds:\u003c\/strong\u003e Uniform pleat folds maximize water flow and minimize pressure loss so the filter can hold more debris without choking the pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-ounce polyester Reemay media:\u003c\/strong\u003e Balances dirt-holding capacity and cleanability while resisting common pool chemicals for longer life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen end cap with 2-1\/8 in ID:\u003c\/strong\u003e Simple open configuration and durable plastic construction make cartridge removal and replacement quick and reliable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Sized to fit many spa and pool brands, offering a broad fitment range for owners of popular hot tub systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cartridge is ideal for owners of hot tubs and small pools using compatible cartridges who want an affordable, easy-to-maintain replacement. It suits people who perform routine cleaning and chemical maintenance and need a cartridge that tolerates those chemicals while maintaining clarity.\u003c\/p\u003e\n\u003cp\u003eIt is less suited to operators seeking specialty media for ultra-fine filtration beyond 20 microns or custom filter shapes; anyone requiring a different pleat count, nonstandard end cap, or specialty high-efficiency material should look for an alternative model matched to that need.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh effective surface area from 50 sq ft and 212 pleats for sustained debris capture.\u003c\/li\u003e\n\u003cli\u003eDurable 100-percent polyester Reemay media resists pool chemicals and cleans up well.\u003c\/li\u003e\n\u003cli\u003eOpen end cap with 2-1\/8 in ID makes replacement and removal straightforward.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFiltration rating around 20 microns is good for general use but not the finest available for specialty filtration needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eC-4950 (pack of 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia area\u003c\/td\u003e\n\u003ctd\u003e50 sq ft per cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePleat count\u003c\/td\u003e\n\u003ctd\u003e212 pleats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia material\u003c\/td\u003e\n\u003ctd\u003e100% polyester Reemay, 3-ounce basis weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration size\u003c\/td\u003e\n\u003ctd\u003eAverage 20 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd cap\u003c\/td\u003e\n\u003ctd\u003eOpen configuration, 2-1\/8 in ID\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eOD 4-15\/16 in, Length 13-5\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Unicel C-4950 2-pack is a practical, cost-conscious choice for hot tub and small pool owners who need reliable, chemical-resistant cartridges that fit popular systems. It balances surface area, cleanability, and durability, offering clear water performance and straightforward maintenance without premium cost.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this cartridge fit my spa?\u003c\/strong\u003e\u003cbr\u003eIt fits many common spa and pool brands with an open end cap and 2-1\/8 in ID, but check your current cartridge dimensions (OD 4-15\/16 in, length 13-5\/16 in) to confirm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow fine is the filtration?\u003c\/strong\u003e\u003cbr\u003eThe media captures particles down to an average of about 20 microns, suitable for general debris and clarity maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these filters be cleaned and reused?\u003c\/strong\u003e\u003cbr\u003eYes, the 100% polyester Reemay media is designed for cleanability and chemical resistance, extending usable life with routine rinsing and care.\u003c\/p\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":48622198915291,"sku":"B01HI26QLO","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71dQJk2t7hL._AC_SL1500.jpg?v=1778519269","url":"https:\/\/gearmusthave.com\/products\/unicel-c-4950-50-sq-ft-spa-filter-cartridge-2-pack-clear-water-fit","provider":"GearMustHave","version":"1.0","type":"link"}