Imperial GV1399 Galvanized Duct End Cap 6 Inch

Product Description

The IMPERIAL GV1399 is a 30-gauge galvanized steel duct end cap designed to seal the open end of a 6-inch round duct section. The no-crimp style allows for straightforward installation without the need for additional forming or crimping tools. This type of fitting is a standard component in forced-air HVAC duct systems, used wherever a duct run must be permanently or temporarily capped off. HVAC installers and sheet metal contractors work with these fittings during new construction, renovation, and system modification projects. The galvanized finish provides corrosion resistance suitable for both conditioned and unconditioned space applications.

This end cap is suited for residential and light commercial HVAC ductwork where a 6-inch round duct termination is required. Common applications include capping unused branch takeoffs, sealing duct ends during rough-in before grille installation, and closing off decommissioned duct runs. The no-crimp design fits directly over the duct end without requiring the mating duct to be crimped down first, which simplifies installation in tight spaces or when working with duct sections that have already been cut to length.

Key Features

• 30-gauge galvanized steel construction for corrosion resistance in HVAC environments
• No-crimp design fits directly over standard 6-inch round duct ends
• Seals duct terminations cleanly without additional forming tools
• Lightweight at 0.313 pounds, easy to handle and carry on the job
• Single-piece unit packaged individually for precise job-site quantities

Compatibility

Designed as an OEM-style replacement and standard fitting for 6-inch round galvanized ductwork in residential and light commercial forced-air HVAC systems.

Installation Notes

Installation is performed by HVAC technicians and sheet metal contractors working on forced-air duct systems. Power down the air handling unit and any associated controls before accessing the duct system. Secure the end cap with sheet metal screws and seal the joint with UL 181-rated duct tape or mastic sealant as required by local mechanical codes. Inspect the fit before finalizing to confirm the cap seats flush against the duct end.