{"product_id":"unicel-uhd-sr100","title":"Unicel UHD-SR100 Replacement Filter for Sta-Rite WC108-58S2X | 102 Sq. Ft.","description":"\u003cdiv class=\"pz-pdp\"\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Unicel UHD-SR100 is a heavy-duty pleated polyester replacement cartridge engineered for the Pentair\/Sta-Rite Posi-Clear PTM100 and System:3 SR100 filter platforms, delivering 102.0 sq ft of filtration area through a high-pleat-count Reemay nonwoven polyester media pack. Construction features molded end caps with reinforced seating geometry to match the System:3 modular housing manifold, a rigid central core rated for sustained commercial pressure cycling, and a banded media pack to prevent pleat collapse under high-flow ΔP conditions. Nominal filtration efficiency is 20 microns under standard test methodology. The element is rated for continuous duty at operating pressures consistent with the Pentair\/Sta-Rite System:3 service envelope and is suitable for both residential high-capacity installations and light commercial duty where the System:3 SR-series housing is specified.\u003c\/p\u003e\n\u003cp\u003eService interval recommendation: replace at ΔP ≥ 8–10 PSI above clean-filter operating baseline, or on an annual calendar cycle for residential service; commercial installations should follow a 60–90 day rotation with documented ΔP logging per local health code requirements. Rinse every 4–6 weeks; chemical soak with TSP or commercial enzyme\/degreaser every 3–6 months to address oils and organic loading that resist water rinse. Muriatic acid wash at 1:20 dilution is compatible for calcium scale removal — limit exposure to 20 minutes and rinse thoroughly before reinstallation. Chlorine tolerance: continuous service at ≤ 10 ppm FAC; bromine compatible without restriction. Verify housing O-rings and manifold seats during cartridge replacement; reseat hand-tight per Pentair\/Sta-Rite specification and pressure-test to clean baseline before returning the 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":42315916345390,"sku":"UNFUHDSR100","price":92.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0016\/3453\/3422\/files\/UNFUHDSR100_aa044d1e-dad9-4e26-969f-f8d51362c359.jpg?v=1777663653","url":"https:\/\/poolzilla.com\/products\/unicel-uhd-sr100","provider":"Poolzilla","version":"1.0","type":"link"}