Imperial Mfg Group Usa Inc GV0845 Round Top Collar 7 in

Product Description

The IMPERIAL MFG GROUP USA INC GV0845 is a 7 inch, 28 gauge crimped round top collar made from galvanized steel. Top collars are sheet metal fittings used to terminate or connect round duct runs at the top of a plenum, furnace cabinet, or air handler. The crimped end allows the collar to slip-fit into adjoining round duct or flex connector without additional forming. HVAC installers and sheet metal technicians use these collars during new installs and duct replacement work. This package contains 10 collars per unit, making it a practical supply for multi-unit jobs or service van stocking.

This collar is suited for residential and light commercial forced-air HVAC duct systems where a 7 inch round duct connection is required at the top of an appliance or duct transition. Common applications include supply trunk takeoffs, furnace top outlets, and air handler collar connections. The 28 gauge galvanized construction is consistent with standard residential sheet metal duct practices. Supplied in a pack of 10, this item works well for contractors handling multiple installations or repairs on a single job site.

Key Features

• 7 inch diameter fits standard round duct systems
• 28 gauge galvanized steel construction for corrosion resistance in conditioned and unconditioned spaces
• Crimped end allows slip-fit connection to round duct or flex connector
• 10 collars per package for efficient job-site supply
• Consistent gauge and diameter across units for repeatable fit

Compatibility

Designed as an OEM-style replacement and standard fitting for residential and light commercial forced-air duct systems requiring a 7 inch round top collar connection.

Installation Notes

Installation is typically performed by a licensed HVAC technician or qualified sheet metal installer. Shut down and lock out the HVAC system before connecting or repositioning duct collars. The crimped end inserts into the receiving duct or fitting and should be secured with sheet metal screws and sealed with UL 181-rated mastic or foil tape per local mechanical code requirements. Do not force the collar into undersized openings, as deforming the gauge will compromise the seal.