Click the Rectangular Folder under Item Options in Navigation. You will then see a list of duct and fittings with General Options to the right.
Select an item in the list and click Global Edit at the top to modify the settings of the item.
Hidden – if hidden, the item will no longer be available in the program
Include Hangers – hangers will be included with the item
Include Angles and Rods – will include reinforcements on the item
Multi-select edit is available for this list. Select more than one item with CRTL or SHIFT click and use global edit to modify all or some items at the same time.