{"product_id":"unicel-c-8409-90-sq-ft-replacement-pool-filter-cartridge-reliable","title":"Unicel C-8409 90 Sq Ft Replacement Pool Filter Cartridge - Reliable","description":"\u003cp\u003eIn this review the Unicel C-8409 cartridge is evaluated for homeowners and pool maintainers who need a straightforward, effective replacement filter. The bottom line: this cartridge delivers reliable debris removal thanks to its \u003cstrong\u003e90 square feet\u003c\/strong\u003e of media and 174 pleats, making it a practical choice for owners of compatible Hayward, Sta-Rite, and Waterway systems who want clear water without specialty parts. It stands out for ease of installation and durable materials rather than high-end performance claims.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltration area:\u003c\/strong\u003e 90 square feet of media provides substantial surface to trap dirt and debris for longer intervals between cleanings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePleat design:\u003c\/strong\u003e 174 sharp, uniform pleats maximize usable surface area so the cartridge holds more debris while maintaining good flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParticle capture:\u003c\/strong\u003e 4-ounce basis weight media captures particles down to an average of 20 microns, helping maintain clearer pool water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial construction:\u003c\/strong\u003e 100-percent polyester Reemay media balances dirt-holding capacity and cleanability with strong chemical resistance for longer life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd cap and fit:\u003c\/strong\u003e A 4-in ID open end cap with molded gasket and durable plastic resists chemical damage and allows straightforward removal and replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Size and design make it compatible with common Hayward, Sta-Rite, and Waterway setups, reducing fit concerns for many owners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Unicel C-8409 is best for residential pool owners who use cartridge-style filters from Hayward, Sta-Rite, or Waterway and want a dependable, easy-to-clean replacement that balances performance and cost. It suits people who perform regular maintenance and prefer a cartridge they can rinse and reuse rather than a disposable option.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for owners seeking ultra-fine filtration below 20 microns or commercial installations that require specialty media or very high flow rates; those buyers should consider dedicated commercial cartridges or alternative media designed for finer filtration or heavy industrial use.\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\u003eGood value for the size and material, offering 90 sq ft of effective filtration surface.\u003c\/li\u003e\n\u003cli\u003eDurable polyester Reemay media resists chemicals and rinses clean for repeated use.\u003c\/li\u003e\n\u003cli\u003eWell-shaped pleats maintain flow and increase dirt-holding capacity compared with flat media.\u003c\/li\u003e\n\u003cli\u003eEnd cap with molded gasket and common 4-in ID makes installation and removal simple.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAverage particle capture is about 20 microns, so it may not meet needs where ultra-fine filtration is required.\u003c\/li\u003e\n\u003cli\u003eNot a proprietary high-end media; performance depends on regular cleaning to maintain effectiveness.\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-8409\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration area\u003c\/td\u003e\n\u003ctd\u003e90 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePleats\u003c\/td\u003e\n\u003ctd\u003e174 pleats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia\u003c\/td\u003e\n\u003ctd\u003e100% polyester Reemay, 4-oz basis weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParticle capture\u003c\/td\u003e\n\u003ctd\u003eAverage 20 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter\u003c\/td\u003e\n\u003ctd\u003e8-15\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e17-3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd cap\u003c\/td\u003e\n\u003ctd\u003e4-in ID open configuration with molded gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Unicel C-8409 is a practical, value-oriented replacement cartridge for typical residential cartridge filter systems. It combines generous media area, durable polyester construction, and an easy-fit end cap to deliver effective debris removal and straightforward maintenance, making it a sensible buy for pool owners who clean cartridges regularly and want reliable performance without specialty pricing.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this cartridge fit my Hayward filter?\u003c\/strong\u003e\u003cbr\u003eIt is designed to be compatible with many Hayward, Sta-Rite, and Waterway cartridge systems; check that your filter accepts a cartridge with an 8-15\/16 in OD, 17-3\/8 in length, and 4-in ID end cap.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I clean this cartridge?\u003c\/strong\u003e\u003cbr\u003eCleaning frequency depends on pool use and debris levels, but owners commonly rinse and vacuum the cartridge monthly during peak season and more often if pressure rises quickly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the cartridge be reused after cleaning?\u003c\/strong\u003e\u003cbr\u003eYes; the 100% polyester Reemay media is designed for repeated rinsing and cleaning while retaining chemical resistance and durability.\u003c\/p\u003e","brand":"Unicel - Distribution","offers":[{"title":"Default Title","offer_id":48609967898843,"sku":"B000OWHZQ6","price":80.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/610nqBIY5sL._AC_SL1500.jpg?v=1778396356","url":"https:\/\/gearmusthave.com\/products\/unicel-c-8409-90-sq-ft-replacement-pool-filter-cartridge-reliable","provider":"GearMustHave","version":"1.0","type":"link"}