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The M&M Manufacturing - Mitek Industries, Inc 507DR820 is a twenty-inch round start collar made from twenty-eight gauge galvanized steel. This collar includes a damper, which helps control airflow in HVAC applications. It is essential for connecting ductwork in a variety of ventilation systems.
This galvanized steel collar is designed specifically for HVAC professionals to create efficient airflow 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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