C-6 6" Collar – Galvanized Steel Duct Connector

The C-6 6" Collar is a robust galvanized steel HVAC component designed to establish strong, airtight connections between round ducts and flat HVAC system parts, including plenums or register boots. This 6-inch collar provides a secure duct transition and ensures maximum airflow efficiency in various residential, commercial, and industrial HVAC installations.

Crafted from premium galvanized steel, the C-6 collar offers exceptional durability and is engineered to resist rust, moisture, and temperature fluctuations, ensuring it remains reliable under diverse conditions. The 6-inch diameter is compatible with most standard round ducts, while its rolled edge lip adds strength, enhances safety, and facilitates quicker installation by eliminating sharp edges.

This collar optimizes airflow efficiency with minimal pressure loss, contributing to quieter and more efficient HVAC system operation. Its design supports seamless integration with existing systems, making it ideal for new builds, retrofits, and ventilation repairs. The C-6 collar guarantees tight, airtight seals, promoting better air distribution and contributing to energy savings.

Weighing light and easy to install, the C-6 collar offers flexibility in fastening methods—whether via screws, sealants, or metal tape—allowing installers to choose the best option for each project.

For durable, corrosion-resistant duct connections in high-performance HVAC systems, the C-6 6" Galvanized Steel Collar delivers the reliability, compatibility, and efficiency needed for any job.