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The M&M 503ATH9 is a start collar designed for air distribution systems. It features a size of nine inches and is made using thirty gauge steel for durability. This component is essential for connecting ductwork and ensuring efficient airflow.
The start collar helps to efficiently guide airflow from HVAC systems into the ductwork.
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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