Imperial Mfg Group Usa Inc GV0846 Round Top Collar 8 in

Product Description

The IMPERIAL MFG GROUP USA INC GV0846 is a crimped round top collar designed for connecting round ductwork at the top of furnaces, air handlers, and plenum boxes. Fabricated from 28-gauge galvanized steel, this collar provides a secure, leak-resistant transition point between the supply plenum and round branch duct runs. The crimped end allows the collar to slip directly into standard round duct fittings without additional modification. HVAC installers and sheet metal mechanics use this fitting during new installations and duct replacement work where a clean, rigid metal connection is required.

This top collar is suited for residential and light commercial forced-air heating and cooling systems. It fits at the top of a plenum or air handler cabinet where round branch ducts originate. The 8-inch diameter makes it a common size for main trunk takeoffs and larger branch runs in split systems and gas furnace installations. Each package contains 10 collars, making it practical for contractors running multiple duct drops on a single job.

Key Features

• Crimped end slides into standard round duct fittings for a secure, tool-free connection
• 28-gauge galvanized steel construction resists corrosion in attic, basement, and crawlspace environments
• 8-inch diameter fits common trunk takeoff and large branch duct applications
• Packaged in quantities of 10 for contractor-volume use
• Rigid metal build maintains round shape under pressure and during installation

Compatibility

Designed as an OEM-style replacement and new-installation fitting for standard 8-inch round 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. Power down the air handler or furnace at the disconnect before cutting into or modifying any duct connection. Secure the collar with sheet metal screws and seal all joints with UL 181-rated foil tape or mastic sealant per applicable mechanical codes. Do not use this fitting on flue, exhaust, or combustion venting applications.