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Can dynamic closure dampers be multi-sectioned in the field to fill an over-sized opening?

April 26, 2017closure dampers Dynamic field opening over-sized

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Can dynamic closure dampers be multi-sectioned in the field to fill an over-sized opening?

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Mmultiple-section dampers must be ordered from the factory as a single unit per UL. The local authority having jurisdiction could approve the multi-section application.