# How to select only duct

**URL:** <https://forum.dynamobim.com/t/how-to-select-only-duct/2045>\
**Category:** Packages\
**Created:** [August 28, 2015, 8:48am UTC](https://forum.dynamobim.com/t/how-to-select-only-duct/2045 "2015-08-28T08:48:07Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jagadeesh\_K](https://avatars.discourse-cdn.com/v4/letter/j/46a35a/32.png) [@Jagadeesh\_K](https://forum.dynamobim.com/u/Jagadeesh_K)\
**Post date:** [August 28, 2015, 8:48am UTC](https://forum.dynamobim.com/t/how-to-select-only-duct/2045/1 "2015-08-28T08:48:07Z")

</div>

I need to add duct part if length and size is same for prafab purpose. . If any changes in duct system i have to renumber once again .

I would like to with revit and excel integration for that i have to select only ducts.

Is it possible to do this using python !

thanks in advance.

![Duct part no](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex022/uploads/dynamobim/original/2X/4/43785c94b5a6a9c55e4dfb3c10adcc4c48793348.png)