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In
order to isolate the vibration and noises to the source,
an
air-tight flexible joint, consisting of a fabric which
is secured to sheet metal on both sided,
must be inserted between the equipment and the ductwork. This flexible joint
is called a flexible duct connector. With out a flexible duct connector; vibrations,
noises and rattles are transmitted into the metal ducts which array the noises
throughout the system.

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