{"product_id":"schaefer-brush-43212-flue-brush-1-1-4-in-dia-7-1-2-in-oal","title":"Schaefer Brush 43212 Flue Brush 1-1\/4 in Dia 7-1\/2 in Oal","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHAEFER BRUSH 43212 is a double stem, single spiral flue brush designed for cleaning flue passages, vents, and combustion chamber tubes in heating systems. The brush head is constructed from tempered steel wire, providing durable scrubbing action against carbon deposits, soot, and scale buildup. It measures 1-1\/4 inches in diameter with a brush length of 4-1\/2 inches and an overall length of 7-1\/2 inches. The 1\/4 inch male NPSM connection allows attachment to standard extension rods for deeper reach. HVAC technicians and service professionals use this tool as part of routine furnace and boiler maintenance.\u003c\/p\u003e\n\u003cp\u003eThis flue brush is suited for residential and light commercial heating system maintenance, particularly where smaller diameter flue passages, heat exchanger tubes, or venting components require mechanical cleaning. The tempered steel wire construction handles the abrasive demands of removing hardened deposits from steel and cast iron surfaces. It is typically used during annual tune-ups, combustion efficiency inspections, and pre-season heating system servicing.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble stem, single spiral design provides consistent contact with flue passage walls\u003c\/li\u003e\n  \u003cli\u003eTempered steel wire brush material handles heavy soot and carbon deposits\u003c\/li\u003e\n  \u003cli\u003e1-1\/4 inch brush diameter fits common small-diameter flue tubes and vents\u003c\/li\u003e\n  \u003cli\u003e4-1\/2 inch brush length provides effective cleaning coverage per pass\u003c\/li\u003e\n  \u003cli\u003e1\/4 inch male NPSM connection is compatible with standard extension rod systems\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.32 pounds for easy handling during confined-space service work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in flue passages, heat exchanger tubes, and venting components with an internal diameter of approximately 1-1\/4 inches. Connects to extension rods with a 1\/4 inch female NPSM thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis brush is installed and used by HVAC technicians and heating system service professionals. Always shut down and allow the heating appliance to cool completely before beginning any flue or venting service work. Secure all extension rod connections before inserting the brush into the flue passage to prevent disconnection inside the system. Work in a well-ventilated area and use appropriate respiratory protection when disturbing soot or combustion byproduct deposits.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Double Stem Single Spiral Flue Brush\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Diameter\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Length\u003c\/strong\u003e: 4-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Material\u003c\/strong\u003e: Tempered Steel Wire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: NPSM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Gender\u003c\/strong\u003e: Male\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.32 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCHAEFER BRUSH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 43212\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51541260042546,"sku":"43212","price":20.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/20dfbe411f80b7e4f5b64f7c3bd96b90.jpg?v=1785870955","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43212-flue-brush-1-1-4-in-dia-7-1-2-in-oal","provider":"Voomi Supply","version":"1.0","type":"link"}