{"product_id":"pentair-60-sqft-fns-plus-tank-bottom-assembly","title":"Pentair 60 SqFt FNS Plus Tank Bottom Assembly","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel enable-luminous-fast-follows enable-updated-hr-color stronger tutor-markdown-rendering\" id=\"model-response-message-contentr_5d6bdfc78cbc8619\" aria-busy=\"false\" aria-live=\"polite\" dir=\"ltr\"\u003e\n\u003cp data-path-to-node=\"0\" id=\"p-rc_dcf786ec93cdf203-51\"\u003e\u003cspan class=\"citation-132 citation-end-132\"\u003eThe Pentair 60 SqFt FNS Plus Tank Bottom Assembly (part number 170018) is a core foundational structural component engineered exclusively for the lower chassis of maximum-capacity residential and commercial pool or spa Diatomaceous Earth (D.E.) filtration systems.\u003csup class=\"superscript\" data-turn-source-index=\"1\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-131 citation-end-131\"\u003eThis replacement lower vessel is standard hardware designed specifically for the Pentair FNS Plus 60-square-foot filter model (FNSP60).\u003csup class=\"superscript\" data-turn-source-index=\"2\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003eInjection-molded from a heavy-walled, glass-reinforced engineering polymer composite, this deep-molded containment basin serves as the primary load-bearing anchor for the entire high-pressure filtration system. Its primary operational role is to safely support the massive weight of a fully saturated 60-square-foot vertical grid nest and its heavy coating of D.E. filter powder. The lower basin features pre-drilled, precision-molded side ports that house the primary 2-inch plumbing bulkhead fittings (including the internal inlet pipe and the vertical standpipe connection), alongside a dedicated lower drainage port fitted with a 1.5-inch drain cap assembly for routine gravity winterization and chemical flush operations.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eThe heavy-gauge upper rim of the basin integrates a machined channel engineered to seat the main tank body O-ring, creating an absolute watertight and airtight compression boundary when locked to the upper tank lid via a heavy-duty stainless steel tension clamp kit. This robust architecture enables the pressurized vessel to easily manage high-velocity hydraulic circulation and sustain continuous internal operating pressures up to 50 PSI without weeping, structural flexing, or joint separation under severe pump vibration surges. Engineered to endure decades of direct outdoor equipment pad weathering, shifting soil chemistry, and intense UV exposure, its rugged composite matrix resists structural deformation, material fatigue, and chemical degradation from pool sanitizers like chlorine, bromine, and muriatic acid scale washes. Due to its large, reinforced structural profile, this individual tank bottom measures approximately 22 inches in length by 22.5 inches in width and carries a net product and shipping weight of approximately \u003cb data-path-to-node=\"2\" data-index-in-node=\"1044\"\u003e30.10 pounds\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53416237891695,"sku":"170018","price":970.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/68847_0_202598161547.webp?v=1782747241","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-60-sqft-fns-plus-tank-bottom-assembly","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}