{"product_id":"pentair_59023400","title":"Pentair FNS Plus 48 Complete Grid Assembly | 59023400","description":"\u003cp\u003eThe Pentair Grid Assembly (59023400) is the OEM complete element grid assembly for the Pentair FNS Plus 48 sq. ft. D.E. filter. This is the full internal filtration core — all grids pre-assembled on the top manifold, ready for direct installation.\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\n\u003cstrong\u003e⚠️ IMPORTANT: THIS IS A COMPLETE KIT — NOT A SINGLE GRID\u003c\/strong\u003e\u003cbr\u003e\nThis listing includes the entire grid assembly: 7 full-size grids and 1 partial grid, pre-assembled on the manifold. You are purchasing the complete set, not an individual replacement grid.\n\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\n\u003cstrong\u003e⚠️ IMPORTANT: FNS PLUS 48 ONLY — NOT COMPATIBLE WITH FNS 48\u003c\/strong\u003e\u003cbr\u003e\nThis assembly fits the Pentair FNS Plus 48 filter exclusively. It is not compatible with the older Pentair FNS 48 model. Confirm your filter model before ordering.\n\u003c\/p\u003e\n\n\u003cp\u003eThe grid assembly is the filtration core of your FNS Plus D.E. filter. The fabric-coated grids serve as the substrate for diatomaceous earth powder, which captures particles as fine as 2–5 microns. When grids become torn or worn, D.E. powder bypasses the media and returns to the pool — typically visible as a white or grayish cloud in the water. Replacing the complete assembly restores full filtration performance.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePentair Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e59023400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eAssembly Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e17-3\/4\" L × 29-1\/2\" H × 18\" W (internal assembly only — not filter tank dimensions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eFilter Surface Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e48 sq. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eGrid Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e8 grids (7 full-size, 1 partial) — pre-assembled on manifold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eQuantity Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eEach (complete assembly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFits Into\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eEquipment Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePentair\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eFNS Plus Filter — FNS Plus Series\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eFNS PLUS 48\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eComplete element grid assembly, 48 sq. ft. filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eCompatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eWhen replacing the grid assembly, inspect and replace the filter tank O-ring at the same time to ensure a leak-free seal on reassembly. Also confirm your filter is labeled \u003cstrong\u003eFNS Plus\u003c\/strong\u003e — not simply FNS — before ordering. The model name is printed on the filter tank label.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53912382177555,"sku":"59023400","price":457.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/PEN59023400_0.jpg?v=1772793742","url":"https:\/\/poolaroo.com\/products\/pentair_59023400","provider":"Poolaroo","version":"1.0","type":"link"}