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The IMPERIAL MFG GROUP USA INC GV0737 is an 8-inch galvanized steel tee cap and plug designed to seal the branch opening of a tee fitting in round ductwork or B-vent pipe systems. Constructed from 28-gauge galvanized steel with a crimp edge, this cap provides a secure, corrosion-resistant closure on unused tee ports. The crimp profile allows it to seat snugly over the tee branch without fasteners in many applications. HVAC installers and sheet metal mechanics reach for this part when capping off a branch during system layout changes or when blocking an unused tee outlet during initial installation.
This tee cap is suited for residential and light commercial duct systems where a branch opening must be closed off cleanly. It fits standard 8-inch round tee branch collars in galvanized ductwork applications. The galvanized finish holds up to the temperature and humidity conditions typical inside forced-air duct systems. It ships in a package quantity of 12, making it practical to stock for jobs requiring multiple closures across a system.
Designed as an OEM-style closure fitting for standard 8-inch round galvanized tee fittings in residential and light commercial forced-air ductwork installations.
Installation is typically performed by a licensed HVAC technician or sheet metal mechanic. Power down the air handling system before accessing ductwork to avoid debris ingestion into the air stream during the work. The crimp edge should seat fully over the tee collar; apply sheet metal screws or foil-backed tape as required by local mechanical codes to secure and seal the cap. Follow applicable SMACNA duct construction standards and local mechanical codes for duct sealing requirements.
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