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The M&M Manufacturing 507D4 Ductboard Starting Collar with Quadrant Damper is an essential component for connecting ductboard systems. This 4-inch collar ensures a secure and efficient link, facilitating smooth air distribution.
Perfect for HVAC professionals, this collar comes with a built-in quadrant damper, making it easy to control airflow. The 4-inch size makes it suitable for various applications in HVAC systems.
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