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The M&M Manufacturing 507D12 is a twelve-inch damper start collar designed for air distribution systems. This collar is essential for connecting ductwork and ensuring proper airflow. It fits various duct sizes and is made to meet standard specifications.
This damper start collar helps to regulate airflow in HVAC systems, providing efficient duct connections.
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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