Use the Change Size tool when you want to change the sizes on a run of fabrication pipework, ductwork, or containment.
This tool is especially helpful when the selection includes multiple sizes in different services.
The MEP Fabrication Parts palette displays information about the service and size(s) for the selected pipework/ductwork/containment.
As you move the mouse pointer over a part size on the MEP Fabrication Parts palette, the corresponding pipework/ductwork/containment is highlighted in the drawing area.
For template parts, such as manufactured rectangular duct, enter a value for the width and depth. For product listed parts, such as round bought-out pipe or duct, select a value from the drop-down list.