{"product_id":"unicel-filter-cartridge-35-sf-waterway-4ch-935","title":"Unicel 4CH-935 Replacement Filter Cartridge | 35 sq. ft. | Waterway Teleweir","description":"\u003cp\u003eThe Unicel 4CH-935 is a 4000 Series 35 sq. ft. replacement filter cartridge precision-engineered for Waterway Teleweir Skim Filters and compatible hot tub systems. With 219 pleats of 3 oz. Reemay 2033 polyester media, this cartridge delivers exceptional dirt-holding capacity and long service life — keeping water cleaner between cleanings and extending time between replacements.\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: Master Spas Eco-Pur Owners — Verify Overall Length Before Ordering\u003c\/strong\u003e\u003cbr\u003e\nThis filter is compatible with Master Spas Eco-Pur filtration systems using a \u003cstrong\u003e5\" OD cartridge\u003c\/strong\u003e. However, Master Spas uses multiple filter lengths across models. \u003cstrong\u003eMeasure your existing cartridge's overall length (top to bottom)\u003c\/strong\u003e and confirm it is \u003cstrong\u003e9 1\/4\"\u003c\/strong\u003e before ordering to ensure correct fit.\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;\"\u003e35 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;\"\u003e9 1\/4\"\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 15\/16\"\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;\"\u003e219\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 v-groove semi-circular handle\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/vgroove_semicircular_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 2\" female SAE thread\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/2_female_sae1.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\u003cp\u003e\u003cstrong\u003eNote from Unicel:\u003c\/strong\u003e For use on 1-1\/2\" male SAE stand pipe.\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\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;\"\u003eMaster Spas\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;\"\u003e-\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px; font-size: 0.9em;\"\u003eReplacement for 5\" OD Eco-Pur filtration systems; must verify OAL for correct Unicel replacement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eNordic Hot Tubs\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;\"\u003e-\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px; font-size: 0.9em;\"\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eRising Dragon\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;\"\u003e-\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px; font-size: 0.9em;\"\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eUnicel\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e35 sq. ft. top load\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; font-size: 0.9em;\"\u003eReplacement for Rising Dragon, Waterway, Custom Molded Products.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eWaterway Plastics\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eTeleweir Skim Filter\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e817-4035\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px; font-size: 0.9em;\"\u003e-\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":52133496783123,"sku":"4CH-935","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/4CH-935__4CH-935_1.jpg?v=1771455734","url":"https:\/\/poolaroo.com\/products\/unicel-filter-cartridge-35-sf-waterway-4ch-935","provider":"Poolaroo","version":"1.0","type":"link"}