Air Flow Products RE1210 Duct Reducer 12 to 10 Inch

Product Description

The AIR FLOW PRODUCTS RE1210 is a duct reducer-increaser fitting designed to transition between 12-inch and 10-inch round ductwork in forced-air HVAC systems. This type of fitting allows technicians to step duct diameter up or down at branch takeoffs, equipment connections, or wherever a system layout requires a size change. It maintains airflow integrity across the transition and is a standard component in residential and light commercial duct fabrication and repair. HVAC installers and sheet metal contractors use fittings like this during both new construction and retrofit work.

The RE1210 is suited for use in supply or return air duct systems where a 12-inch to 10-inch diameter transition is required. Typical applications include connecting trunk lines to branch runs, adapting to equipment inlets and outlets, and correcting duct sizing mismatches during system modifications. It fits into standard round duct assemblies and works with both rigid and flexible duct connections depending on the installation design.

Key Features

• Transitions between 12-inch and 10-inch round duct diameters in a single fitting
• Functions as both a reducer and increaser depending on airflow direction
• Compatible with standard round duct fabrication and field assembly methods
• Suitable for supply and return air duct applications

Compatibility

Designed as an OEM-style duct fitting for residential and light commercial forced-air HVAC systems requiring a 12-inch to 10-inch round duct transition.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal contractors. Shut down the air handling unit and verify the system is de-energized before making duct modifications. Secure the fitting with sheet metal screws and seal all joints with UL-listed duct sealant or foil tape in accordance with local mechanical codes. Insulate exposed duct sections as required by applicable energy codes.

Technical Specifications

• Inlet Diameter: 12 inches
• Outlet Diameter: 10 inches
• Fitting Type: Reducer-Increaser

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: RE1210