How to purge the unused ceiling type

[diesellam]

I remembered I've read about this before, but I forgot the solution.
How do you "purge" all of the unused ceiling types and wall types to make the file size smaller?
Like "purge" in AutoCAD?

Thanks in advance

[antman]

Manage tab-->Settings panel-->Purge Unused

[renogreen]

Be careful how you use the Revit Purge. You may well purge things you wish you had later. I generally only use the Purge near the end of a project. Unless you have tons of unused stuff in your model the change in file size will be minimal.

[diesellam]

Thanks a lot. It did work.

[Revitaoist]

Don't forget 'additional settings' - 'line patterns' to manually delete all imported line patterns after you remove imported cad files, and manually deleting all the 'render material xxx-xxx-xxx' in your materials.