Railings

Hi,
Does anyone know how to return a Revit family to its original form?
I didn’t like the balusters in the glass railing, so I deleted everything besides the glass without realizing that I didn’t duplicate it, but now it’s messed up and not functional. Is there a way for me to get it back to the original?

Also, does anyone know of good website to find glass railings? I’m having a hard time finding…

The easiest way is to use the undo function. You can also open a new file and give the railing a new name then copy it into your file.
For the glass railing I like to use the glass rail just remove everything other than the top and bottom rail. Create a curtain wall inside it and edit the profile to the shape of the railing.