{"product_id":"pentairfnsplustankbottomassembly36sf170016pen170016","title":"Pentair FNS Plus Tank Bottom Assembly 36 sf | 170016","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair 170016 Tank Bottom Assembly for FNS Plus 36 Sq Ft D.E. Filter (FNSP36)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair \u003cstrong\u003e170016\u003c\/strong\u003e is an OEM replacement \u003cstrong\u003etank bottom assembly\u003c\/strong\u003e (lower tank half) for the Pentair\/PacFab\n    \u003cstrong\u003eFNS Plus 36 sq ft\u003c\/strong\u003e vertical-grid D.E. filter, commonly referenced as \u003cstrong\u003eFNSP36\u003c\/strong\u003e. This part forms the lower half\n    of the filter tank and provides the base structure and sealing surface for the tank O-ring and clamp band.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Pentair \/ PacFab \u003cstrong\u003eFNS Plus 36 sq ft\u003c\/strong\u003e D.E. filter\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon model reference:\u003c\/strong\u003e \u003cstrong\u003eFNSP36\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e Tank bottom \/ lower tank half assembly\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Always verify your filter model and parts diagram before ordering. FNS Plus tank parts vary by filter size (24, 36, 48, and 60 sq ft).\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhat This Part Does\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eForms the lower half of the filter tank housing\u003c\/li\u003e\n    \u003cli\u003eProvides the seating surface for the tank O-ring and clamp band connection\u003c\/li\u003e\n    \u003cli\u003eSupports internal filter components and helps maintain a pressure-tight filter body\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to Replace the Tank Bottom\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCracks, hairline fractures, or visible seepage from the lower tank shell\u003c\/li\u003e\n    \u003cli\u003eWarping or damage that prevents proper sealing with the tank O-ring\u003c\/li\u003e\n    \u003cli\u003eDamage at the clamp contact area from age, impact, UV exposure, or overtightening\u003c\/li\u003e\n    \u003cli\u003ePersistent leaks after replacing the tank O-ring and confirming clean sealing surfaces\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off the pump and \u003cstrong\u003erelieve all filter pressure\u003c\/strong\u003e before opening the filter.\u003c\/li\u003e\n    \u003cli\u003eInspect and replace the \u003cstrong\u003etank O-ring\u003c\/strong\u003e if it is flattened, cracked, swollen, or nicked.\u003c\/li\u003e\n    \u003cli\u003eClean all sealing surfaces thoroughly before reassembly.\u003c\/li\u003e\n    \u003cli\u003eReinstall the clamp band evenly and follow manufacturer tightening procedure (do not over-tighten).\u003c\/li\u003e\n    \u003cli\u003eAfter restart, check for leaks once the system reaches full operating pressure.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products (Aqua Pool Supply)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%20170016\"\u003ePentair 170016 Tank Bottom (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%20170020\"\u003ePentair 170020 Tank Lid Assembly for FNS Plus 36 (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%2039010200%20tank%20o-ring\"\u003eFNS Plus Tank O-Ring 39010200 (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%20190003%20FNS%20Plus%20clamp%20kit\"\u003eFNS Plus Clamp Kit (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Pentair%2059023500%20FNS%20Plus%2036%20grid\"\u003eFNS Plus 36 Grid Assembly (Search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the tank O-ring clean and lightly lubricated with pool-safe silicone lubricant to reduce pinching and leaks.\u003c\/li\u003e\n    \u003cli\u003eNever open the filter until the pressure gauge reads zero and air has been fully relieved.\u003c\/li\u003e\n    \u003cli\u003eIf the filter is in direct sun, shade can help extend the life of plastic tank components.\u003c\/li\u003e\n    \u003cli\u003eRecord your clean starting pressure after service so you can track when the filter needs cleaning.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":46797892223151,"sku":"170016","price":398.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/pentair-fns-plus-tank-bottom-assembly-36-sf-170016-pool-filter-parts-6281470.jpg?v=1777068879","url":"https:\/\/freshized.com\/products\/pentairfnsplustankbottomassembly36sf170016pen170016","provider":"Freshized","version":"1.0","type":"link"}