{"product_id":"unicel-c-7450","title":"Unicel C-7450 Replacement Filter for Pentair PAP50 | 50 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel C-7450 is a pleated polyester cartridge filter element engineered for residential and light commercial pool applications, providing 50 sq ft of filtration area through a high-density Reemay nonwoven polyester media pack on a heat-stabilized core assembly. Dimensional specifications place this element in the 7-inch OD family with a 3-inch ID center bore and a 14.25-inch overall length, terminated with ABS injection-molded end caps featuring a closed-bottom, open-flow top configuration. Nominal filtration efficiency is rated at 15 microns under standard test conditions, with rated flow capacity matched to the Pentair PAP50 housing's design GPM at clean operating differential. Maximum continuous service temperature is 104°F at operating pressures to 25 PSI; UV-stabilized end cap adhesive resists chemical degradation across standard pool water chemistry parameters.\u003c\/p\u003e\n\u003cp\u003eService interval recommendation for residential installations: pressure-differential replacement trigger at ΔP ≥ 8–10 PSI above clean-filter operating baseline, or annual calendar replacement, whichever occurs first. Rinse cycle every 4–6 weeks; chemical soak with dilute TSP or enzyme cleaner every 3–6 months to remove oils, surfactants, and organic loading that resist mechanical rinsing. For calcium scale accumulation, the C-7450 is compatible with muriatic acid soak at 1:20 dilution (20-minute maximum exposure) followed by thorough fresh-water rinse prior to reinstallation. Chlorine tolerance: continuous service at ≤ 10 ppm free available chlorine; bromine compatible without restriction. ABS end cap construction is compatible with standard acid wash procedures. Verify housing O-ring condition and lubricate with silicone-based O-ring grease at each service interval; pressure-test the system post-installation to confirm seating and bypass integrity. 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":42315912970286,"sku":"UNFC7450","price":56.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNFC7450_8a43a478-75da-491d-aeda-cbf26f6c7625.jpg?v=1777663304","url":"https:\/\/poolzilla.com\/products\/unicel-c-7450","provider":"Poolzilla","version":"1.0","type":"link"}