Elbow

The spiral duct elbow is a type of spiral duct fitting which function is to adjust the direction of the pipeline. Elbows with different bending radian to provide an efficient material-flow direction.

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PLENUM BOX

A plenum is a distribution box attached to the supply outlet and often return inlet of the air handling unit. And the purpose of plenum box is to distribute the cooled or heated air to several spaces. It is also used to balance the air and attenuate the sound caused by air movement in the duct.

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