{"product_id":"pentair-60-fns-plus-grid-replacement-pack","title":"Pentair 60\" FNS Plus Grid Replacement Pack","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_a90ee71b17b3c6e3-72\"\u003eThe Pentair 60 SqFt FNS Plus Grid Replacement Pack (part number 59023700) is a complete internal filtration matrix upgrade package engineered exclusively for maximum-capacity pool and spa Diatomaceous Earth (D.E.) filtration systems, specifically tailored to fit the Pentair FNS Plus 60-square-foot filter model (FNSP60) along with compatible legacy Pac-Fab and American Products vessels. The full replacement pack consists of eight vertical filter elements—comprising seven full-size grids and one partial, narrow grid—each measuring 30 inches in length. Every individual grid is manufactured with a rigid, injection-molded polypropylene structural frame wrapped tightly in a high-density, chemically inert monofilament polypropylene filter cloth featuring heavy-duty, sonic-welded seams to resist fraying under pressure. The primary operational role of this grid matrix is to serve as the absolute physical purification engine inside the pressurized D.E. filter tank; as raw water is forced through the fabric surfaces coated in D.E. powder, the assembly traps and removes microscopic organic matter, algae spores, silt, and dust down to a pristine 2 to 5 microns. The top and bottom necks of each grid feature precision-molded alignment ports that seat tightly into the filter’s internal top manifold and bottom collector hub, forcing all circulating water along an organized hydraulic path and preventing unfiltered water from bypassing the media core while sustaining continuous internal operating pressures up to 50 PSI without buckling. Built to remain permanently submerged in a highly dynamic, chemical-laden environment, this grid pack completely resists tensile fatigue during high-velocity backwash flow reversals, structural sagging, and chemical degradation from prolonged exposure to pool sanitizers like chlorine, bromine, or routine scale-remover acid baths. Due to the heavy-duty plastic frames and extensive monofilament fabric coverage required for maximum surface area filtration, this complete replacement grid pack carries a net product and shipping weight of approximately \u003cb data-path-to-node=\"0\" data-index-in-node=\"2097\"\u003e21.00 to 24.00 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":53416238252143,"sku":"198083","price":547.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/5257230_eaccd10a-02b0-45f6-b257-2acc5bec9cae.webp?v=1782747436","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-60-fns-plus-grid-replacement-pack","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}