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Top Ceiling Box | 6" X 6" X 4" | Galvanized Steel Metal Box Is Compatible With Duct 4"


Why HVAC Premium? 

You may think of grilles and registers as a generic component of the ventilation system in your house, but they are also the most visible representation of your air system. With HVAC Premium you get an extra measure of quality that will be visible to your family members and house guests.

Additional Information

Installation Document Coming Soon


The ceiling box is the best way to regulate airflow is to install a manual volume damper in the duct run, all the way around the square portion which can be used for attachment or folded over. Our galvanized duct boxes are made of high-quality galvanized sheet metal with crimped ends (snap-lock design) for easy fitting and secure connection. The c-box duct with drywall flange, round-connects to vent register diffuser, airflow conditioning ceiling registers.