Imperial Mfg Group Usa Inc GV0839 Round Top Collar 4 in

Product Description

The IMPERIAL MFG GROUP USA INC GV0839 is a 4-inch, 30-gauge galvanized steel crimped round top collar designed for connecting round ductwork sections at the top of furnaces, air handlers, and similar HVAC equipment. The crimped end allows for a friction-fit connection into standard round duct or fittings, simplifying installation and reducing the need for additional adapters. At 30 gauge, this collar offers the structural rigidity required for residential and light commercial duct systems. HVAC installers and sheet metal mechanics use this collar as a starting point for duct runs off the supply plenum or equipment outlet.

This top collar is suited for residential forced-air heating and cooling applications where a 4-inch round duct connection is required at the equipment. It is commonly installed on the top of furnaces, fan coil units, or air handlers to transition from the equipment cabinet to the round duct distribution system. It is sold in packages of 12 units, making it practical for contractors stocking common fittings for multiple jobs.

Key Features

• 4-inch diameter round profile for standard duct system connections
• 30-gauge galvanized steel construction resists corrosion in typical HVAC environments
• Crimped end provides friction-fit insertion into round duct or fittings without additional adapters
• Package quantity of 12 units supports contractor bulk stocking
• Galvanized finish suited for residential and light commercial forced-air systems

Compatibility

Designed as an OEM-style replacement and standard installation fitting for residential and light commercial HVAC duct systems requiring a 4-inch round top collar connection.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal mechanic. Shut down and de-energize the HVAC equipment before beginning any ductwork connection. The crimped end inserts into the receiving duct or fitting and should be secured with sheet metal screws and sealed with listed duct tape or mastic per local mechanical code requirements. Follow applicable SMACNA standards and local mechanical codes when integrating this collar into the duct distribution system.