# How to get the reference face of a Face based family

**URL:** <https://forum.dynamobim.com/t/how-to-get-the-reference-face-of-a-face-based-family/54269>\
**Category:** DesignScript\
**Tags:** dynamo\
**Created:** [August 20, 2020, 12:38pm UTC](https://forum.dynamobim.com/t/how-to-get-the-reference-face-of-a-face-based-family/54269 "2020-08-20T12:38:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![m.shcheblykin](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/m.shcheblykin/32/92853_2.png) [@m.shcheblykin](https://forum.dynamobim.com/u/m.shcheblykin)\
**Post date:** [August 20, 2020, 12:38pm UTC](https://forum.dynamobim.com/t/how-to-get-the-reference-face-of-a-face-based-family/54269/1 "2020-08-20T12:38:19Z")

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Hello dear professional.  
I can not find the way how to get the reference face of a face based element in Revit that is hosted on a wall face.  
There are a lot of nodes that can get the host element (wall revit element) of a face based elements. For example, you have a switcher on the wall. The switcher family is a face based element. I want to get the reference face of this family as a surface in dynamo. **I don’t need the wall element, I need a surface.**  
Could you please advise me how can I do it

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/a/3/a3460b78b3b62aab35aac648e33e85e8f647e077.png)

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**Author:** ![\_Vijay](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/_vijay/32/91307_2.png) [@\_Vijay](https://forum.dynamobim.com/u/_Vijay)\
**Post date:** [August 20, 2020, 2:12pm UTC](https://forum.dynamobim.com/t/how-to-get-the-reference-face-of-a-face-based-family/54269/2 "2020-08-20T14:12:20Z")

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The OOTB node “Select Points on Face”