{"product_id":"unicel-c-9403","title":"Unicel C-9403 Replacement Filter for Waterway 817-0150P | 150 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel C-9403 is a pleated polyester cartridge filter element engineered for above-ground and residential in-ground pool applications, delivering 150 sq ft of effective filtration area through a high-pleat-count Reemay nonwoven polyester media pack. Nominal filtration efficiency is 20 microns under standard test conditions. Dimensional specifications: 8.4375-inch OD, 3.0-inch ID, 24.25-inch length, configured with an open-top, open-bottom ABS injection-molded end cap design for through-flow manifold mounting. Construction includes a Schedule-40 PVC pipe core for axial rigidity under sustained operating pressure. Rated flow capacity is 150 GPM at clean differential, with continuous service rated to 104°F and operating pressures to 25 PSI. End cap bond and pleat geometry are held to industry-standard tolerances for confirmed bypass-free seating in OEM housings.\u003c\/p\u003e\n\u003cp\u003eService interval recommendation: residential installations — pressure-differential-based replacement triggered at ΔP ≥ 8–10 PSI above clean-filter operating baseline, or on an annual calendar cycle, whichever occurs first. Rinse with fresh water every 4–6 weeks during active season; perform a chemical soak with TSP or enzyme cleaner every 3–6 months to remove accumulated oils and surfactants. For calcium scale accumulation, the element is compatible with muriatic acid soak at 1:20 dilution (20 minutes maximum exposure); rinse thoroughly before reinstallation. Polyester fabric and ABS end cap construction tolerate continuous service at ≤ 10 ppm free available chlorine and are fully compatible with standard enzyme-based cartridge cleaners. Verify post-installation pressure against documented clean baseline before returning the system to unattended operation. 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":42315915493422,"sku":"UNFC9403","price":119.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNFC9403_2b4ef2cf-6a7c-434d-b981-a99400afef70.jpg?v=1777663537","url":"https:\/\/poolzilla.com\/products\/unicel-c-9403","provider":"Poolzilla","version":"1.0","type":"link"}