{"product_id":"25021-0223s","title":"Pentair Sta-Rite System 3 S7M400 136 sqft Inner Cartridge, 8-5\/8\" Dia x 25-3\/8\" (25021-0223S)","description":"\u003cp\u003ePentair Sta-Rite System 3 S7M400 136 sqft Inner Cartridge, 8-5\/8\" Dia x 25-3\/8\" is built for maintaining the correct fit, seal and function within compatible Sta-Rite System 3 filter applications. Restoring filter media with the correct cartridge helps improve water clarity, flow rate and service efficiency. System 3 cartridge filters use matched inner and outer elements, so selecting the correct cartridge position and size is important. This replacement supports proper filtration balance inside the tank and helps restore the surface area needed for clear water and stable operating pressure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHelps restore filtration surface area and water clarity\u003c\/li\u003e\n\u003cli\u003eSized for the listed Sta-Rite System cartridge application\u003c\/li\u003e\n\u003cli\u003eUseful for pressure rise, short cycle or reduced flow service\u003c\/li\u003e\n\u003cli\u003eVerify square footage and dimensions before installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse the listed part number (25021-0223S) as the primary compatibility reference, then compare the physical part,\u003c\/p\u003e","brand":"Pentair\/Sta-Rite","offers":[{"title":"Default Title","offer_id":48509931454619,"sku":"25021-0223S","price":243.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/files\/17-102-1420_XL.jpg?v=1778108034","url":"https:\/\/www.bathandspaparts.com\/products\/25021-0223s","provider":"Bath and Spa Parts Online","version":"1.0","type":"link"}