{"product_id":"schaefer-brush-43285-flue-brush-2-5-in-dia-8-in-oal","title":"Schaefer Brush 43285 Flue Brush 2.5 in Dia 8 in Oal","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHAEFER BRUSH 43285 is an extra heavy filled double stem, single spiral flue brush designed for cleaning flue passages, vent pipes, and combustion tubes in heating systems. Built with tempered steel wire fill, it delivers aggressive scrubbing action against soot, scale, and debris buildup inside metal flue surfaces. The brush measures 2.5 inches in diameter with an 8-inch overall length and a 4.5-inch brush section. The 3\/8-inch NPSM male connection allows attachment to standard extension rods for deep-reach cleaning. HVAC technicians and chimney service pros reach for this brush during annual maintenance and combustion system inspections.\u003c\/p\u003e\n\u003cp\u003eThis flue brush is suited for residential and light commercial heating applications where regular flue cleaning is required to maintain system efficiency and safe venting. It is commonly used on gas-fired furnaces, boilers, oil-fired appliances, and B-vent systems. The extra heavy fill density and double stem construction make it appropriate for flues that accumulate heavy deposits and require more aggressive mechanical cleaning than standard-weight brushes provide. The 3\/8-inch NPSM male fitting threads onto compatible extension rod sets to reach full flue depth without full disassembly.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTempered steel wire fill for durable, aggressive soot and scale removal\u003c\/li\u003e\n  \u003cli\u003eExtra heavy fill density with double stem construction for increased scrubbing force\u003c\/li\u003e\n  \u003cli\u003eSingle spiral configuration maintains consistent contact with flue wall surface\u003c\/li\u003e\n  \u003cli\u003e2.5-inch diameter brush head fits standard residential flue sizes\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch NPSM male connection threads onto standard extension rods\u003c\/li\u003e\n  \u003cli\u003e4.5-inch brush length covers adequate surface area per pass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style service brush for use with standard 3\/8-inch NPSM extension rod systems commonly used in residential and light commercial flue and vent cleaning applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this brush is typically performed by licensed HVAC technicians or chimney service professionals. Always shut down and allow the appliance to cool completely before inserting any cleaning tool into the flue or vent system. Verify the brush diameter matches the interior flue diameter before use to avoid jamming or damage to flue liner surfaces. Work in accordance with local codes and manufacturer service guidelines when performing combustion system maintenance.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Length\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Fill 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: 3\/8 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: 0.87 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 43285\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51542948774194,"sku":"43285","price":22.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b1e19090cce8dd3663c6369278d1d6aa_64f165d0-2578-4f3c-adeb-8a0537a825ea.jpg?v=1785911928","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43285-flue-brush-2-5-in-dia-8-in-oal","provider":"Voomi Supply","version":"1.0","type":"link"}