Hello,
If you want to change site width only for certain page types then you should create a theme setting preset (in Dashboard -> Theme settings -> Options presets) with conditions like in the screenshot (https://prnt.sc/26nvqg0) and in this preset, you need to set the “Content full width” option for the container in the “Site width” filed.
You can read more about presets in our documentation:
https://xtemos.com/docs/woodmart/theme-settings-presets/
Don’t hesitate to reach out if you have any more questions. We’re thankful that you took the time to share your concerns with us.
All the Best,
Kind Regards