Most MEP contractors moving to Revit with Fabrication Parts at some point wrestle with renumbering parts. You can purchase tools or add-ins to make this easier or even write your own with Dynamo or C#.
But most contractors aren’t coders. And buying more software can also be a challenge. The good news is that those are not your only options, There’s some well written FREE Revit Add-Ins that make this a breeze.
Required Tools
Head over to DiRoot’s web site (https://diroots.com/) and download the OneFilter Add-In found here and the ReOrdering Add-In found here.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/Company_DiRoots.png)
Once installed, you’ll find the tools in the DiRoots Ribbon in Revit along with any of their other tools you may have installed.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/Revit_DiRoots-Ribbon.png)
Getting Started
The following image shows 2 runs of Rectangular and 2 runs of Round duct work drawn in Revit using Fabrication Parts. One is drawn in a +2in WG service and the other -2in WG service. All duct has a tag configured to display the Fabrication Part’s Item Number property.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/Revit_Fab-Part-Renumber-1.png)
First Up – DiRoots OneFilter
Using the DiRoot’s OneFilter Add-In, you can easily select not just Fabrication Parts, but also select them based on their properties.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/DiRoots_OneFilter.png)
Once selected, you can see Revit selects the specified items in your model.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/Revit_Fab-Part-Renumber-2.png)
Next – DiRoots ReOrdering
Now that your desired parts are selected, you can use the DiRoots ReOrdering Add-In to renumber those parts.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/DiRoots_ReOrdering.png)
After applying your renumbering parameters, you can see how Revit then displayed the updated Item Numbers for the Fabrication Parts.
![](https://www.darrenjyoung.com/wp-content/uploads/2020/09/Revit_Fab-Part-Renumber-3.png)
Wrapup
As you can see, with a couple free (well written) utilities you can quickly and easily select and renumber your fabrication parts in Revit.
There’s a lot of other reasons beyond renumbering to use some of these Add-Ins. They’re very functional for a lot of workflows. Those uses are beyond the scope of this post but feel free to explore these Add-Ins or some of the other DiRoots tools when you get a chance. They’re some of the highest quality free Add-Ins for Revit than you’ll find anywhere.