Imperial Mfg Group Usa Inc GV0792 Taper Reducer 8x7 in 28GA

Product Description

The IMPERIAL MFG GROUP USA INC GV0792 is a 28-gauge galvanized steel taper reducer/increaser designed for round duct systems in residential and light commercial HVAC installations. This fitting transitions between an 8-inch duct diameter and a 7-inch duct diameter without a crimped end, allowing either direction of airflow and simplifying connections to both upstream and downstream ductwork. The no-crimp design accommodates slip connections on both ends, reducing the need for additional fittings or field modification. HVAC technicians and sheet metal installers rely on this type of fitting when balancing airflow across trunk-and-branch or extended plenum duct systems.

This fitting is suited for forced-air heating and cooling duct systems where a smooth diameter transition is required between main trunk lines and branch runs. The no-crimp configuration is particularly useful when connecting to collars, takeoffs, or duct sections that already carry a beaded or standard slip end. It is sold in a package quantity of 12 units, making it practical for contractors stocking sheet metal fittings for production installs or service work. Applications include residential furnace and air handler duct systems as well as light commercial ventilation runs.

Key Features

• Transitions between 8-inch and 7-inch round duct diameters
• 28-gauge galvanized steel construction resists corrosion in HVAC duct environments
• No-crimp ends allow slip-fit connections on both the larger and smaller openings
• Taper design maintains smooth airflow transition with minimal turbulence
• Sold in a package of 12 units for contractor and production use

Compatibility

Designed as an OEM-style replacement and standard fitting for residential and light commercial round galvanized duct systems requiring an 8-inch to 7-inch diameter transition.

Installation Notes

This fitting is typically installed by licensed HVAC technicians or sheet metal mechanics working on forced-air duct systems. Power down the air handling unit and close the supply air shutoff before modifying any duct section. Secure connections with sheet metal screws and seal all joints with UL 181-rated foil tape or mastic sealant per local mechanical code requirements. Do not exceed the rated gauge thickness when substituting alternative fittings in the same run.