{"product_id":"170146","title":"Pentair System3 S7M400 Inner \u0026 Outer Cartridge Pack (170146)","description":"\u003cp\u003eRestore filtration performance in compatible System 3 modular cartridge filters with this genuine Pentair Pool Products S7M400 inner and outer cartridge pack, part 170146. The paired cartridge design provides the correct replacement media set for systems that rely on both inner and outer elements to capture fine debris.\u003c\/p\u003e\u003cp\u003eUse this pack when cartridges are heavily stained, damaged, pleats are collapsed, or cleaning no longer restores flow. Replacing both elements together helps maintain balanced filtration and avoids mismatched performance between old and new media.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInner and outer cartridge set for select Pentair System 3 filters\u003c\/li\u003e\n\u003cli\u003eHelps restore flow rate, clarity, and debris capture\u003c\/li\u003e\n\u003cli\u003eIdeal for scheduled filter media replacement\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentair Pool Products","offers":[{"title":"Default Title","offer_id":48505636389019,"sku":"170146","price":564.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/files\/17-102-2705_XL.jpg?v=1778055331","url":"https:\/\/www.bathandspaparts.com\/products\/170146","provider":"Bath and Spa Parts Online","version":"1.0","type":"link"}