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The Gray Metal Products 5X4-311P is a galvanized reducer used to connect 5-inch and 4-inch duct sizes. This component is made from durable steel and is designed for HVAC systems as well as ventilation applications.
This reducer allows airflow between different duct sizes effectively.
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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