{"product_id":"pentairfnsplustanklidassembly48sf170021pen170021","title":"Pentair FNS Plus Tank Lid Assembly 48 sf 170021","description":"\u003cp\u003eThe Pentair FNS Plus Tank Lid Assembly 170021 restores a pressure-tight seal so your filtration system runs safely. Designed specifically for the 48 sq ft FNS Plus filter, this genuine OEM lid assembly protects internal components and keeps your pool water crystal clear. When pressure integrity matters, this is the replacement professionals trust.\u003c\/p\u003e\n\u003ch2\u003eWhat happens if my Pentair FNS Plus filter lid is damaged or leaking?\u003c\/h2\u003e\n\u003cp\u003eA compromised lid can cause air leaks, pressure loss, and unsafe operating conditions in your DE filter system. The Pentair 170021 Tank Lid Assembly replaces worn or cracked covers with an exact-fit OEM solution built for the 48 sq ft FNS Plus model. When installed correctly, it restores proper sealing, maintains system pressure, and helps extend the life of your filter grids and internal components.\u003c\/p\u003e\n\u003c!--split--\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52341023637871,"sku":"PEN170021","price":333.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/2691\/8805\/files\/PentairFNSPlusTankLidAssembly48sf170021.png?v=1783031009","url":"https:\/\/shastapoolsupply.com\/products\/pentairfnsplustanklidassembly48sf170021pen170021","provider":"Shasta Pool Supply","version":"1.0","type":"link"}