{"product_id":"unicel-fg-3009-de-filter-grid-sta-rite-system-3-s7d75-18-x-9-11-16","title":"Unicel FG-3009 Replacement DE Filter Grid for Sta-Rite System 3 S7D75 – 18\" x 9-11\/16\"","description":"\u003cp\u003eThe Unicel FG-3009 is a single replacement DE filter grid engineered for the \u003cstrong\u003eSta-Rite System 3 Model S7D75\u003c\/strong\u003e — a 75 square foot diatomaceous earth filter system. Built to Unicel's precision manufacturing standards, this grid delivers reliable filtration performance and is designed to seat correctly within the S7D75's unique modular housing for a secure, leak-free fit.\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0;\"\u003e\n\u003cstrong\u003e⚠️ IMPORTANT: CHECK BEFORE YOU BUY\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003eThis product is a single (1) replacement DE filter grid — it is NOT a complete set. A full filter service requires multiple grids. Please verify the quantity and type (full or partial) needed for your specific filter model before ordering.\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0;\"\u003e\n\u003cstrong\u003e📋 IMPORTANT: Sta-Rite System 3 S7D75 — Unique Grid Configuration\u003c\/strong\u003e\u003cbr\u003e\nUnlike standard DE filters that use 7 full grids plus 1 partial grid, the \u003cstrong\u003eSta-Rite System 3 S7D75 uses only 2 identical full-size grids — no partial grid is required.\u003c\/strong\u003e A complete filter re-grid for this model requires \u003cstrong\u003e2 × FG-3009\u003c\/strong\u003e. This listing is for one (1) grid.\n\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\u003eFilter System Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e75 sq. ft. (total system) — 37.5 sq. ft. per grid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eGrid Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e18\"\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\u003eGrid Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e9-11\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePort Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePort centered on the edge of the grid\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\u003eGrids Per System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e2 (identical full grids — no partial grid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eHigh-grade DE filter fabric with reinforced seaming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote from Unicel:\u003c\/strong\u003e Port is centered on the edge of the grid.\u003c\/p\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\u003eOEM Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eFilter Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eOEM Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eGrid Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSta-Rite\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSystem 3 Model S7D75\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e23900-1173\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e2 per system (no partial grid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e(This is not an exhaustive list.)\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003ePro Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Always turn off the pump and release all pressure from the filter tank via the air relief valve before opening the tank to replace grids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify Your Model:\u003c\/strong\u003e Confirm your filter is the S7D75 before ordering — other Sta-Rite System 3 models (e.g., S8D110) use a different grid configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuy Both at Once:\u003c\/strong\u003e Since the S7D75 requires 2 identical grids, it's best practice to replace both simultaneously for balanced filtration performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect Seals:\u003c\/strong\u003e When replacing grids, inspect tank o-rings and manifold seals for wear. Replace if cracked or deformed before reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimension Match:\u003c\/strong\u003e Verify your existing grid measures 18\" × 9-11\/16\" before ordering. Do not mix grids of different dimensions within the same filter system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"sku-aliases\"\u003e\u003csmall\u003eAlso known as: FG3009\u003c\/small\u003e\u003c\/p\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":53828217930003,"sku":"FG-3009","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/FG3009_1_2.jpg?v=1771546360","url":"https:\/\/poolaroo.com\/products\/unicel-fg-3009-de-filter-grid-sta-rite-system-3-s7d75-18-x-9-11-16","provider":"Poolaroo","version":"1.0","type":"link"}