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The MITCHELL METAL PRODUCTS MCO-181 Start Collar is designed for use in HVAC systems. The model number is 1903-503ATH9 and features a nine-inch diameter. This collar provides a secure fit for duct connections.
This collar ensures minimal air leakage and is easy to install in various configurations.
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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