To insert a shaded vertical fitting, go to
Ribbon: DM HVAC->Ducts-> 
Shaded Vertical
Pulldown Menu: DM HVAC->Fittings->Shaded Vertical
You will be prompted to specify the duct on which a shaded vertical fitting is to be inserted.
Select duct or label to insert fitting at:
A shaded vertical fitting will be inserted on the drawing, as shown below.
