{"product_id":"air-flow-products-re064-reducer-increaser-6-to-4-inch","title":"Air Flow Products RE064 Reducer Increaser 6 to 4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe AIR FLOW PRODUCTS RE064 is a round duct reducer-increaser fitting designed to transition between 6-inch and 4-inch duct diameters in forced-air ventilation and HVAC distribution systems. This type of fitting is used to step duct sizing up or down at branch connections, plenums, or where airflow must be redirected through a smaller or larger duct run. HVAC installers and sheet metal contractors use reducer-increaser fittings as standard components during duct system fabrication and retrofit work. The RE064 is a straightforward, functional fitting suited for both new construction and replacement applications.\u003c\/p\u003e\n\u003cp\u003eThis fitting is appropriate for residential and light commercial forced-air systems where a 6-inch to 4-inch duct transition is required. Common install scenarios include supply trunk-to-branch transitions, register boot approach runs, and duct modification work during system balancing or renovation. The 85-degree designation in the product reference indicates the fitting geometry relevant to this transition configuration.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTransitions between 6-inch and 4-inch round duct diameters\u003c\/li\u003e\n  \u003cli\u003eSuitable for supply and return air duct applications in forced-air systems\u003c\/li\u003e\n  \u003cli\u003eStandard reducer-increaser geometry for smooth airflow transition\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard round duct and fittings at both connection ends\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style duct fitting for use with standard 6-inch and 4-inch round duct systems in residential and light commercial forced-air HVAC installations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a licensed HVAC technician or sheet metal contractor. The system blower should be shut off and the unit powered down before modifying any duct connections. Joints should be sealed with UL 181-listed mastic or metal tape in accordance with local mechanical codes. Sheet metal screws are commonly used to secure the fitting to adjacent duct sections prior to sealing.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge End Diameter\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmall End Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Reducer-Increaser\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: AIR FLOW PRODUCTS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: RE064\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AIR FLOW PRODUCTS","offers":[{"title":"Default Title","offer_id":51345877664050,"sku":"RE064","price":19.82,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554470.jpg?v=1782065384","url":"https:\/\/voomisupply.com\/products\/air-flow-products-re064-reducer-increaser-6-to-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}