{"product_id":"unicel-4ch-925","title":"Unicel 4CH-925 Replacement Filter for Saratoga Spas PSANT20P3 | 20 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel 4CH-925 is a pleated polyester spa cartridge filter element providing 20.0 sq ft of effective filtration area, engineered for replacement service in Saratoga Spas PSANT20P3 (Futura Antigua) housings and dimensionally equivalent spa circulation systems. Construction features Reemay-grade nonwoven polyester media with nominal 20-micron filtration efficiency, terminated in ABS injection-molded end caps configured with a closed bottom and open-flow top for top-load manifold seating. Coreless pleat-pack geometry is optimized for the low-pressure operating range typical of residential spa pumps (5–15 PSI). The element is rated for continuous service at temperatures up to 104°F, with intermittent excursions to 115°F acceptable per Unicel testing protocol. End cap adhesive bond is UV-stabilized and resistant to standard spa water chemistry.\u003c\/p\u003e\n\u003cp\u003eSpa service intervals for the 4CH-925: fresh-water rinse every 2–4 weeks; chemical soak with dilute TSP or enzyme degreaser every 4–6 weeks to remove body oils, lotions, and surfactant residue that resist standard rinsing. Replace element at ≤ 12-month intervals under typical residential spa duty cycles, or sooner when ΔP rises ≥ 5 PSI above clean operating baseline. Chemical compatibility: polyester media and ABS end caps tolerate continuous service at ≤ 10 ppm free available chlorine or ≤ 30 ppm total bromine; muriatic acid wash at 1:20 dilution (20-minute maximum soak) is compatible for calcium scale removal — rinse thoroughly before reinstallation. Enzyme cleaners 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 spa 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":42315917033518,"sku":"UNF4CH925","price":33.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNF4CH925_2d448031-67ec-40ae-85db-c120222dffd6.jpg?v=1777663700","url":"https:\/\/poolzilla.com\/products\/unicel-4ch-925","provider":"Poolzilla","version":"1.0","type":"link"}