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The M&M Manufacturing 5018 is a start collar designed for duct systems. This model is eight inches in diameter and is part of the 501 Series. It fits metal tabbed ductboard, providing a secure connection in ventilation systems.
This start collar enables easy connections in HVAC installations.
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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