Imperial Mfg Group Usa Inc GV0780 Taper Reducer 5x3 in

Product Description

The IMPERIAL MFG GROUP USA INC GV0780 is a 30-gauge galvanized steel taper reducer/increaser designed for round duct transitions in residential and light commercial HVAC systems. This fitting steps a 5-inch duct connection down to a 3-inch connection, or functions in reverse as an increaser depending on airflow direction. The no-crimp end design allows for a clean slip fit into standard duct collars and fittings. HVAC installers and sheet metal mechanics use this type of fitting when transitioning between trunk lines, branches, and register boots where duct diameters change along the run.

This reducer/increaser is suited for forced-air supply and return duct systems where a diameter change is required between sections. It fits into standard round duct assemblies and is commonly used in new construction, retrofit, and replacement duct work. The galvanized steel construction holds up to typical HVAC airflow conditions and resists corrosion in unconditioned spaces such as attics, crawlspaces, and mechanical rooms. The no-crimp configuration on both ends accommodates connection into existing duct runs without additional modification.

Key Features

• 5-inch to 3-inch taper transition for round duct diameter changes
• 30-gauge galvanized steel construction for corrosion resistance
• No-crimp ends for clean slip-fit installation into standard duct fittings
• Functions as reducer or increaser depending on installation orientation
• Sold individually; packaged in quantities of 12

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 5-inch and 3-inch round galvanized duct systems in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal mechanic. Shut down the air handling unit and confirm the system is de-energized before modifying any duct section. Secure the fitting with sheet metal screws and seal all joints with UL 181-rated mastic or foil tape per local mechanical code requirements. Do not use standard duct tape as a primary sealant on pressure duct systems.