Imperial Mfg Group Usa Inc GV0791 Taper Reducer 8x6 28GA

Product Description

The IMPERIAL MFG GROUP USA INC GV0791 is a galvanized steel taper reducer/increaser designed for round duct transitions in residential and light commercial HVAC systems. It steps an 8-inch duct down to a 6-inch duct — or increases from 6 inches to 8 inches — using a smooth taper profile without a crimped end. Fabricated from 28-gauge galvanized steel, this fitting delivers solid corrosion resistance and structural rigidity appropriate for low-pressure supply and return air applications. HVAC installers and sheet metal mechanics use this fitting to connect duct sections of differing diameters without improvising transitions on the job.

This reducer/increaser is suited for forced-air heating and cooling duct systems where a direct size change between 8-inch and 6-inch round duct is required. The no-crimp design allows either end to accept standard duct collars, snap-lock fittings, or drive cleats depending on the installation method. Typical applications include branch takeoffs, trunk-to-branch transitions, and equipment connections in residential new construction and retrofit ductwork.

Key Features

• Transitions between 8-inch and 6-inch round duct in either direction
• No-crimp ends allow flexible connection to standard fittings on both sides
• 28-gauge galvanized steel construction provides corrosion resistance for long-term duct service
• Smooth taper profile minimizes airflow turbulence at the transition point
• Sold in a package quantity of 10 units, suitable for contractor stock

Compatibility

Designed as an OEM-style replacement and standard-fit component for 8-inch and 6-inch round galvanized duct systems in residential and light commercial forced-air HVAC installations.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal mechanic. Power down the air handling system before making duct connections. Secure both ends with sheet metal screws and seal all joints with UL 181-rated mastic or foil tape in accordance with local mechanical codes. Do not over-compress the fitting during installation, as deformation of the taper can restrict airflow.