{"product_id":"unicel-105-sq-ft-cartridge-for-clean-and-clear-plus-420-crystal-water-425-c-7471","title":"Unicel 105 Sq. Ft. Cartridge For Clean and Clear Plus 420 \u0026 Crystal Water 425 | C-7471","description":"\u003cp data-start=\"1989\" data-end=\"2776\"\u003eThe Unicel C-7471 Filter Cartridge is engineered for dependable mechanical filtration in large cartridge pool filter systems that utilize a 105 square foot element. It features approximately 168 uniform pleats of spun-bonded polyester media designed to capture fine debris and contaminants while allowing steady circulation through the filter. With dimensions of roughly 7 inches in diameter and 26 1\/16 inches in length, and open 3 inch end caps, the cartridge installs properly in compatible filter housings used on larger residential pool systems. Reinforced internal construction helps the cartridge retain its shape during operation and repeated cleanings. Scheduled replacement supports stable pressure, efficient filtration, and consistent water clarity.\u003c\/p\u003e\n\u003ch3 data-start=\"2778\" data-end=\"2792\"\u003eHighlights\u003c\/h3\u003e\n\u003cul data-start=\"2793\" data-end=\"3381\"\u003e\n\u003cli data-start=\"2793\" data-end=\"2916\"\u003e\n\u003cp data-start=\"2795\" data-end=\"2916\"\u003e\u003cstrong data-start=\"2795\" data-end=\"2829\"\u003eHigh-Capacity 105 Sq Ft Media:\u003c\/strong\u003e Expanded pleated surface area improves debris capture and extends service intervals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2917\" data-end=\"3042\"\u003e\n\u003cp data-start=\"2919\" data-end=\"3042\"\u003e\u003cstrong data-start=\"2919\" data-end=\"2961\"\u003eDurable Polyester Filter Construction:\u003c\/strong\u003e Spun-bonded media resists breakdown from pool chemicals and frequent cleaning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3043\" data-end=\"3150\"\u003e\n\u003cp data-start=\"3045\" data-end=\"3150\"\u003e\u003cstrong data-start=\"3045\" data-end=\"3070\"\u003eOpen 3 Inch End Caps:\u003c\/strong\u003e Designed to support unrestricted water flow and straightforward installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3151\" data-end=\"3269\"\u003e\n\u003cp data-start=\"3153\" data-end=\"3269\"\u003e\u003cstrong data-start=\"3153\" data-end=\"3181\"\u003eLarge-System Filter Use:\u003c\/strong\u003e Commonly installed in cartridge filter systems serving higher flow residential pools.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3270\" data-end=\"3381\"\u003e\n\u003cp data-start=\"3272\" data-end=\"3381\"\u003e\u003cstrong data-start=\"3272\" data-end=\"3308\"\u003eMaintains Filtration Efficiency:\u003c\/strong\u003e Helps control pressure rise and supports smooth circulation performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePentair Clean and Clear Plus 420 Filters\u003c\/li\u003e\n\u003cli\u003eWaterway Crystal Water 425 Sq. Ft. Cartridge Filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eR173576\u003c\/li\u003e\n\u003cli\u003e178584\u003c\/li\u003e\n\u003cli\u003e817-0106\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"6359\" data-end=\"6378\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-start=\"6380\" data-end=\"6637\"\u003eThe Unicel C-7471 105 Sq Ft Filter Cartridge is designed for reliable filtration in compatible cartridge pool filter systems. This FAQ addresses compatibility, installation guidance, and online ordering considerations to help confirm fitment before service.\u003c\/p\u003e\n\u003ch2 data-start=\"6639\" data-end=\"6677\"\u003eCompatibility and Fitment Questions\u003c\/h2\u003e\n\u003cp data-start=\"6679\" data-end=\"6766\"\u003eVerifying cartridge dimensions before ordering helps prevent delays during maintenance.\u003c\/p\u003e\n\u003ch4 data-start=\"6768\" data-end=\"6827\"\u003eWhich pool filters are designed for the Unicel C-7471?\u003c\/h4\u003e\n\u003cp data-start=\"6828\" data-end=\"7049\"\u003eThis cartridge is intended for Pentair Clean \u0026amp; Clear Plus 420 and Waterway Crystal Water 425 systems that use 105 sq ft cartridges with 3 inch open end caps. Online customers often ask this when replacing filter elements.\u003c\/p\u003e\n\u003ch4 data-start=\"7051\" data-end=\"7117\"\u003eWill the C-7471 fit other brands with similar square footage?\u003c\/h4\u003e\n\u003cp data-start=\"7118\" data-end=\"7292\"\u003eSquare footage alone does not guarantee compatibility. Length, diameter, and end-cap opening must match exactly. Before completing your online order, verify all measurements.\u003c\/p\u003e\n\u003ch4 data-start=\"7294\" data-end=\"7361\"\u003eIs this cartridge compatible with variable-speed pump systems?\u003c\/h4\u003e\n\u003cp data-start=\"7362\" data-end=\"7520\"\u003eYes, the pleated design supports strong flow and stable pressure in variable-speed systems when sized correctly. Proper fit is essential for best performance.\u003c\/p\u003e\n\u003ch2 data-start=\"7522\" data-end=\"7557\"\u003eInstallation and Troubleshooting\u003c\/h2\u003e\n\u003cp data-start=\"7559\" data-end=\"7623\"\u003eUnderstanding installation steps helps ensure proper filtration.\u003c\/p\u003e\n\u003ch4 data-start=\"7625\" data-end=\"7675\"\u003eHow do I install the Unicel C-7471 cartridge?\u003c\/h4\u003e\n\u003cp data-start=\"7676\" data-end=\"7897\"\u003eRemove the old cartridge, clean the filter housing, and slide the new cartridge fully onto the standpipe. Ensure it is seated evenly before closing the tank. Online customers often install this during scheduled cleanings.\u003c\/p\u003e\n\u003ch4 data-start=\"7899\" data-end=\"7963\"\u003eWhat causes high pressure after installing a new cartridge?\u003c\/h4\u003e\n\u003cp data-start=\"7964\" data-end=\"8147\"\u003eHigh pressure may indicate improper seating, debris in the housing, or plumbing restrictions. Rechecking alignment often resolves the issue. Correct installation restores normal flow.\u003c\/p\u003e\n\u003ch4 data-start=\"8149\" data-end=\"8203\"\u003eHow can I tell when the cartridge needs cleaning?\u003c\/h4\u003e\n\u003cp data-start=\"8204\" data-end=\"8367\"\u003eRising pressure, reduced circulation, or cloudy water are common indicators. Regular inspection helps maintain performance. Timely cleaning extends cartridge life.\u003c\/p\u003e\n\u003ch2 data-start=\"8369\" data-end=\"8400\"\u003eOnline Ordering and Delivery\u003c\/h2\u003e\n\u003cp data-start=\"8402\" data-end=\"8456\"\u003ePlanning delivery helps coordinate filter maintenance.\u003c\/p\u003e\n\u003ch4 data-start=\"8458\" data-end=\"8500\"\u003eCan I order the Unicel C-7471 online?\u003c\/h4\u003e\n\u003cp data-start=\"8501\" data-end=\"8641\"\u003eYes, this cartridge can be ordered online and often ships free when applicable. Check delivery estimates at checkout to plan service timing.\u003c\/p\u003e\n\u003ch4 data-start=\"8643\" data-end=\"8711\"\u003eHow do I confirm this is the correct cartridge before ordering?\u003c\/h4\u003e\n\u003cp data-start=\"8712\" data-end=\"8870\"\u003eConfirm length, diameter, end-cap opening, and filter model compatibility. Reviewing product details helps avoid mistakes before completing your online order.\u003c\/p\u003e\n\u003ch4 data-start=\"8872\" data-end=\"8926\"\u003eWhat should I inspect when the cartridge arrives?\u003c\/h4\u003e\n\u003cp data-start=\"8927\" data-end=\"9048\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eCheck pleats, end caps, and dimensions against your old cartridge. Verifying fit early helps prevent installation delays.\u003c\/p\u003e","brand":"Unicel","offers":[{"title":"1 Pack","offer_id":52607455625516,"sku":"C-7471 (1 Pack)","price":79.99,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":52607455658284,"sku":"C-7471 (4 Pack)","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/1943\/3260\/files\/Unicel105Sq.Ft.CartridgeForCleanandClearPlus420_CrystalWater425C-7471SOSPool_2.jpg?v=1777145292","url":"https:\/\/www.sospool.com\/products\/unicel-105-sq-ft-cartridge-for-clean-and-clear-plus-420-crystal-water-425-c-7471","provider":"SOS Pool \u0026 Spa Supplies","version":"1.0","type":"link"}