{"product_id":"unicel-fg-1248-de-filter-grid-pentair-purex-sm-smbw-48-sq-ft","title":"Unicel FG-1248 Replacement DE Filter Grid | Pentair Purex SM\/SMBW 48 sq. ft.","description":"\u003cp\u003eThe Unicel \u003cstrong\u003eFG-1248\u003c\/strong\u003e is a single, precision-engineered replacement full DE filter grid designed for \u003cstrong\u003ePentair Purex SM\/SMBW series 48 sq. ft. DE filter systems\u003c\/strong\u003e. Built to exact OEM dimensional specifications, this grid delivers reliable debris capture and extended service life for filter systems with a total 48 square foot filtration capacity. Reinforced construction withstands the pressure demands of sealed DE filter tank environments.\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: Partial Grid Also Required for Full Filter Service\u003c\/strong\u003e\u003cbr\u003e\nThe Pentair Purex SM\/SMBW 2048 and SM\/SMBW 4048 filters require \u003cstrong\u003e7 full grids + 1 partial grid\u003c\/strong\u003e for a complete re-grid service. This listing is for the full grid only. You will also need companion partial grid \u003cstrong\u003eFG-1249\u003c\/strong\u003e to complete your filter service.\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: Do Not Mix Premier and Purex Grids\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003ePremier and Purex grids are NOT interchangeable.\u003c\/strong\u003e Substituting or mixing grid types from different manifold systems will result in improper fit and potential equipment damage. Always replace with the correct Purex-compatible grid for your filter model.\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\u003eUnicel Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eFG-1248\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\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;\"\u003e48 sq. ft. (total system capacity)\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 Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e25 3\/8\" (measured from collar notch to opposite end)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eCollar Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSingle notch collar, covered with black adapter\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\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\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e1 grid (single replacement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote from Unicel:\u003c\/strong\u003e Collar has single notch and is covered with a black adapter. Length is measured from collar notch to opposite end of 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;\"\u003ePentair - Purex\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSM\/SMBW 2048\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e—\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e7 full grids + 1 partial grid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePentair - Purex\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSM\/SMBW 4048\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e—\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e7 full grids + 1 partial grid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\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\u003eMeasure before ordering:\u003c\/strong\u003e Verify your existing grid length using Unicel's measurement method — from the collar notch to the opposite end of the grid — to confirm FG-1248 is the correct fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the collar and black adapter:\u003c\/strong\u003e Check for cracks or wear on the collar and adapter during replacement. Replace if damaged to maintain a proper seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't forget the partial grid:\u003c\/strong\u003e A complete re-grid for the SM\/SMBW 2048 and 4048 requires 7 of this full grid (FG-1248) plus 1 partial grid (FG-1249). Order both to complete the service in one visit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the tank o-ring:\u003c\/strong\u003e While the filter is open, inspect and lubricate the tank o-ring to prevent leaks after reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"sku-aliases\"\u003e\u003csmall\u003eAlso known as: FG1248\u003c\/small\u003e\u003c\/p\u003e","brand":"Unicel","offers":[{"title":"Default Title","offer_id":53856883867923,"sku":"FG-1248","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/FG-1248_1_2.jpg?v=1771889830","url":"https:\/\/poolaroo.com\/products\/unicel-fg-1248-de-filter-grid-pentair-purex-sm-smbw-48-sq-ft","provider":"Poolaroo","version":"1.0","type":"link"}