Rectangular to Round Duct Fitting, CFM dissapearing

[cyriousn]

When using a rectangular to round transition the CFM in the resulting ductwork goes to zero....Has anyone run into this before? Maybe there is a parameter in the duct fitting family that I do not have properly configured?

[tfullerpipes]

Is this a custom fitting or OOTB?

[cyriousn]

It is OOTB

[tfullerpipes]

Have you verified both ducts are part of the same system?

[cyriousn]

Just figured out that the direction of the airflow in my air terminal wasn't correct....whoops Thanks anyways though!