{"product_id":"unicel-filter-cartridge-40-sf-4ch-940","title":"Unicel 4CH-940 Replacement Filter Cartridge 40 sq. ft. | Dimension One Spas","description":"\u003cp\u003eThe Unicel 4000 Series 4CH-940 delivers 40 sq. ft. of filtration surface area engineered to the exact OEM specifications of your Dimension One Spas filter housing. With 176 precision-pleated folds of 3 oz. Reemay 2033 polyester media, this cartridge maximizes dirt-holding capacity and maintains consistent water clarity between cleanings — longer than standard media alternatives.\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: Verify Your Filter Quantity Before Ordering\u003c\/strong\u003e\u003cbr\u003e\nSome Dimension One Spas models require \u003cstrong\u003etwo cartridges\u003c\/strong\u003e for a complete filter service. Replacing only one cartridge in a dual-filter system will result in unbalanced flow and reduced filtration efficiency. Check your spa's owner manual or filter housing to confirm how many cartridges your model requires, then add the correct quantity to your cart.\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 Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e40 sq. ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e15\"\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\u003eOuter Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e4 5\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eTop Inner Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eN\/A\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\u003eBottom Inner Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eN\/A\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;\"\u003e3 oz. Reemay 2033\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\u003ePleat Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e176\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 15px 15px 0 15px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 12px; margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eTop Cap:\u003c\/strong\u003e semi-circular handle\u003c\/div\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/semi_circular_handle1.gif\" alt=\"Top Cap\" style=\"max-width: 100%; height: auto; margin: 0; padding: 0;\"\u003e\n\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 15px 15px 0 15px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 12px; margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eBottom Cap:\u003c\/strong\u003e 1-1\/4\" SAE thread\u003c\/div\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/sae_thread1234.gif\" alt=\"Bottom Cap\" style=\"max-width: 100%; height: auto; margin: 0; padding: 0;\"\u003e\n\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\u003eOEM Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePart 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;\"\u003eDimension One Spas\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e40 sq. ft. Top Load\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e1561-13\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px; font-size: 0.9em;\"\u003eReplacement for Dimension One Spas. Verify quantity required for your specific model.\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","brand":"Unicel","offers":[{"title":"Default Title","offer_id":52133495865619,"sku":"4CH-940","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/4CH-940__4CH-940_1.jpg?v=1771455738","url":"https:\/\/poolaroo.com\/products\/unicel-filter-cartridge-40-sf-4ch-940","provider":"Poolaroo","version":"1.0","type":"link"}