{"product_id":"unicelreplacementfiltercartridge25sf4ch24unf4ch24","title":"Unicel Replacement Filter Cartridge 25 sf | 4CH-24","description":"\u003cdiv\u003e\n\u003ch2\u003eUnicel 4CH-24 Spa\/Pool Filter Cartridge (25 sq ft)\u003c\/h2\u003e\n\u003cp\u003eThe Unicel 4CH-24 is a high-quality replacement filter cartridge commonly used in spas and small pool filtration systems. It offers reliable filtration performance, helping keep water clear by capturing debris, oils, and fine particles.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e25 sq ft of pleated filter media — enough surface area for effective filtration on smaller pools or spas.\u003c\/li\u003e\n\u003cli\u003e173 pleats with spun-bonded polyester media — enhances dirt-holding capacity and maintains strong flow.\u003c\/li\u003e\n\u003cli\u003eCompact size (about 9.75″ long × 4.625″ outer diameter) — fits many common spa and small pool filter housings.\u003c\/li\u003e\n\u003cli\u003eTop-load design with molded cone handle — makes cartridge removal and replacement quick and easy.\u003c\/li\u003e\n\u003cli\u003eBottom end cap with 1.5″ MPT threaded outlet — works with standard spa\/pool plumbing configurations.\u003c\/li\u003e\n\u003cli\u003eChemical-resistant and designed for repeated cleaning cycles without degradation of media.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Unicel\u003c\/li\u003e\n\u003cli\u003ePart Number: 4CH-24\u003c\/li\u003e\n\u003cli\u003eFiltration Area: 25 sq ft\u003c\/li\u003e\n\u003cli\u003ePleat Count: 173\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: ~4.625″\u003c\/li\u003e\n\u003cli\u003eLength: ~9.75″\u003c\/li\u003e\n\u003cli\u003eTop Cap: Molded cone handle (top-load style)\u003c\/li\u003e\n\u003cli\u003eBottom Cap: 1.5″ male-thread (MPT) outlet\u003c\/li\u003e\n\u003cli\u003eMedia: Spun-bonded polyester filter media\u003c\/li\u003e\n\u003cli\u003eTypical Use: Spa and small pool cartridge filters, hot tubs, compact filtration systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace \/ Use\u003c\/h3\u003e\n\u003cp\u003eUse the 4CH-24 when the existing cartridge is clogged, pleats are compressed or damaged, or filtration performance declines (e.g., reduced flow, cloudy water, more frequent cleanings). It’s also ideal as a spare cartridge for regular maintenance cycles on spas or smaller pools.\u003c\/p\u003e\n\u003ch3\u003eMaintenance \u0026amp; Care Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRinse the cartridge regularly (every 2–4 weeks depending on use) to remove trapped debris and prolong media life.\u003c\/li\u003e\n\u003cli\u003ePeriodically soak or deep-clean the cartridge with a spa-safe filter cleaner to remove oils, lotions, and organic buildup that normal rinsing cannot remove.\u003c\/li\u003e\n\u003cli\u003eInspect pleats and end caps for tears, media collapse, or chemical wear — replace if any damage is observed.\u003c\/li\u003e\n\u003cli\u003eKeep a spare cartridge on hand — rotating filters allows one to dry between uses and extend overall cartridge life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":46797792444591,"sku":"4CH-24","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/unicel-replacement-filter-cartridge-25-sf-4ch-24-cartridges-4804131.jpg?v=1777067406","url":"https:\/\/freshized.com\/products\/unicelreplacementfiltercartridge25sf4ch24unf4ch24","provider":"Freshized","version":"1.0","type":"link"}