These plenum take offs are where the supply tubing connects to the plenum itself. This kit is intended to be used with 9" diameter round sheet metal plenums. You will need one plenum take off per supply tubing run.
This kit contains (2) plenum take offs, and matches nicely with the SpacePak AC-IKLT-2 Installation Common Parts Kit.
For more information, visit www.SpacePak.com.