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The M&M Manufacturing 9 Ductboard Finger Saver Starting Collars with Holes, MPN 9508, are designed for use in air distribution systems and sheet metal projects. These collars fit nine-inch ducts and allow for secure closure through pre-drilled holes, which can be utilized with zip ties or fasteners. Their flat design aims to minimize installation time for ventilation and air duct applications.
These starting collars enhance installation efficiency in ductwork.
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