{"product_id":"unicel-c-2302","title":"Unicel C-2302 Replacement Filter for Rainbow 17-0051 | 14.5 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel C-2302 is a pleated polyester spa cartridge filter element providing 14.5 sq ft of filtration area in a compact, threaded-base form factor optimized for Rainbow Plastics 17-0051 housing geometry. Media construction utilizes Reemay nonwoven spunbond polyester with a nominal 15-micron filtration efficiency, supported on a structural core suited to the pressure profile of residential spa circulation pumps (5–15 PSI operating range). End cap configuration features a closed top and a molded ABS threaded base for direct standpipe engagement, eliminating the need for separate sealing hardware. Maximum continuous service temperature is rated at 104°F with intermittent excursions to 115°F acceptable, consistent with standard spa duty cycles.\u003c\/p\u003e\n\u003cp\u003eSpa-duty service interval recommendations: rinse with fresh water every 2–4 weeks, with chemical soak (dilute TSP or enzyme degreaser) every 4–6 weeks to address oils, lotions, and surfactant fouling that resist water rinsing alone. Replacement is recommended at ≤ 12-month intervals under typical residential spa use, or at ΔP ≥ 5 PSI above clean operating baseline, whichever occurs first. Chemical compatibility: polyester media and ABS end cap construction tolerate continuous service at ≤ 10 ppm free available chlorine or ≤ 30 ppm total bromine; muriatic acid soak at 1:20 dilution (20-minute maximum exposure) is compatible for calcium scale removal. Enzyme-based cartridge cleaners are compatible without restriction. Standard Unicel 90-day manufacturing defect warranty applies through authorized distribution.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eYour order includes the selected quantity of replacement pool filter cartridges. Each unit is individually inspected for quality before shipping.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":42315910840366,"sku":"UNFC2302","price":21.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNFC2302_1fbafb6b-fde3-4594-b787-9f8409f04688.jpg?v=1777663080","url":"https:\/\/poolzilla.com\/products\/unicel-c-2302","provider":"Poolzilla","version":"1.0","type":"link"}