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The IMPERIAL MFG GROUP USA INC GV0735 is a 30-gauge galvanized steel tee cap and plug designed to seal the branch opening of a 6-inch tee fitting in residential and light commercial duct systems. The crimped edge allows it to seat firmly into standard round tee fittings without fasteners, providing a quick, low-profile closure. This fitting is used during system balancing, zone isolation, or when a branch run is capped off permanently or temporarily. HVAC sheet metal installers and duct fabricators are the primary trades that handle this component during new construction and retrofit work.
This tee plug is suited for 6-inch round duct tee branch closures in forced-air heating and cooling systems. The galvanized steel construction resists corrosion in typical attic, basement, and crawlspace environments. It ships in a package quantity of 12 units, making it practical for contractors stocking common closure sizes on the truck or job site. Use cases include sealing unused tee branches, blocking off decommissioned duct runs, or capping branches during phased construction.
Designed as an OEM-style sheet metal fitting for use with standard 6-inch round galvanized duct tee fittings in residential and light commercial forced-air systems.
Installation is typically performed by a licensed HVAC technician or sheet metal installer. Before capping any branch, confirm the system is powered down and airflow to the zone has been verified with the rest of the duct layout. The crimped end inserts into the tee branch opening and can be secured further with sheet metal screws or foil-backed tape per local mechanical code requirements. Do not use this cap on pressurized branches carrying live airflow without additional mechanical fastening.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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