{"product_id":"unicel-c-9401","title":"Unicel C-9401 Replacement Filter for Waterway 817-0075P | 75 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel C-9401 is a pleated polyester cartridge filter element delivering 75.0 sq ft of effective filtration area, engineered as a direct replacement for the Waterway 817-0075P filter housing assembly. Construction features Reemay nonwoven polyester media with nominal 20-micron filtration efficiency, ABS injection-molded end caps with closed bottom and open-flow top configuration, and a perforated polypropylene core providing axial rigidity under standard residential and light commercial operating pressures. Dimensional specifications: 8.0-inch OD with reinforced end cap bands, 5-15\/16-inch height (top to bottom of end caps), and a top opening of 3-inch OD with 2-1\/8-inch ID for standpipe seating. Rated flow capacity is 112 GPM at 15 PSI clean differential pressure. Maximum operating temperature: 104°F continuous; pressure rating to 50 PSI. UV-stabilized end cap bonding resists chemical degradation across the standard pool sanitizer chemistry envelope.\u003c\/p\u003e\n\u003cp\u003eService interval recommendation: residential installations — rinse every 4–6 weeks; chemical soak with TSP or enzyme cleaner every 3–6 months to remove surfactants and organic loading; replacement on an annual calendar cycle or at pressure-differential-based trigger of ΔP ≥ 8–10 PSI above clean-filter operating baseline, whichever occurs first. Light commercial duty cycles: service every 60–90 days with documented ΔP logging. Chemical compatibility: polyester fabric and ABS end caps tolerate continuous service at ≤ 10 ppm free available chlorine and standard bromine sanitization. Muriatic acid wash compatible at 1:20 dilution for calcium scale removal (20-minute maximum soak; rinse thoroughly before reinstallation). Enzyme cleaners compatible without restriction. Verify O-ring integrity at housing manifold and confirm post-installation pressure within manufacturer baseline before returning system to service. Standard Unicel 90-day manufacturer's 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":42315915427886,"sku":"UNFC9401","price":77.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNFC9401_10295ef3-f1b1-4f16-9eef-fd8f8c432fe8.jpg?v=1777663525","url":"https:\/\/poolzilla.com\/products\/unicel-c-9401","provider":"Poolzilla","version":"1.0","type":"link"}