# Add Curtain Grid lines

**URL:** <https://discourse.mcneel.com/t/add-curtain-grid-lines/220054>\
**Category:** Revit\
**Tags:** windows, grasshopperrhino, rhinoinsiderevit, rhino8\
**Created:** [June 17, 2026, 8:24pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054 "2026-06-17T20:24:23Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![jameschadud](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jameschadud/32/472736_2.png) [@jameschadud](https://discourse.mcneel.com/u/jameschadud)\
**Post date:** [June 17, 2026, 8:24pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/1 "2026-06-17T20:24:23Z")

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Hi guys.

Does anyone know how to add Curtain Grid mullion to a Curtain wall using the in rhino?

For example, if I click on Curtain Grid in revit, I can add manually but I would like to select the curves in rhino and send them to revit using rhino inside revit.

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/8/0/e/80e723c1e64c468e646918e57f887901d386312d.png)

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**Author:** ![MSAwan](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/msawan/32/764409_2.png) [@MSAwan](https://discourse.mcneel.com/u/MSAwan)\
**Post date:** [June 17, 2026, 8:52pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/2 "2026-06-17T20:52:25Z")

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@jameschadud currently there is no native RIR component to add curtain grid lines.

You can use the scripted component to add the curtain grid lines.

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**Author:** ![Japhy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/japhy/32/487647_2.png) [@Japhy](https://discourse.mcneel.com/u/Japhy)\
**Post date:** [June 17, 2026, 8:53pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/3 "2026-06-17T20:53:22Z")

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Here is a link to an older script [Curtain Wall Grid - #72 by Japhy](https://discourse.mcneel.com/t/curtain-wall-grid/103674/72)

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**Author:** ![jameschadud](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jameschadud/32/472736_2.png) [@jameschadud](https://discourse.mcneel.com/u/jameschadud)\
**Post date:** [June 18, 2026, 1:07pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/4 "2026-06-18T13:07:56Z")

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Hi Japhy. Thanks for replying.

I have tried this script and Im its crashing revit 2026. Do you have an example how it actually works?

Thanks

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**Author:** ![Japhy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/japhy/32/487647_2.png) [@Japhy](https://discourse.mcneel.com/u/Japhy)\
**Post date:** [June 18, 2026, 2:26pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/5 "2026-06-18T14:26:10Z")

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Is there a crash report?

What is your [about info](https://discourse.mcneel.com/t/help-us-help-you-rhino-inside-revit-edition/170291/5)?

I won’t have access to Revit till later today, maybe over the weekend. If your still having issues i’ll take a look then.

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**Author:** ![jameschadud](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jameschadud/32/472736_2.png) [@jameschadud](https://discourse.mcneel.com/u/jameschadud)\
**Post date:** [June 18, 2026, 4:29pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/6 "2026-06-18T16:29:59Z")

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Hi Japhy.

Nevermind, I got it working now. Thank you.

But there is one doubt about the script. Once I send it to revit, Its unpinned right? Lets say if I need to modify it, I have to delete it manually in revit and re send it again?

Thanks

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**Author:** ![jameschadud](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jameschadud/32/472736_2.png) [@jameschadud](https://discourse.mcneel.com/u/jameschadud)\
**Post date:** [June 18, 2026, 6:11pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/7 "2026-06-18T18:11:32Z")

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@Japhy

Also, is there a way to add or remove one segment only?

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**Author:** ![MSAwan](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/msawan/32/764409_2.png) [@MSAwan](https://discourse.mcneel.com/u/MSAwan)\
**Post date:** [June 18, 2026, 6:30pm UTC](https://discourse.mcneel.com/t/add-curtain-grid-lines/220054/8 "2026-06-18T18:30:10Z")

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Yes it doesn’t have the element tracking you have to delete and generate the grids again.