Replacement part for mirrored closet door hardware

Hi,
These bypass closet doors are fully mirrored on the front. We're looking for the bottom floor guide replacements like this one in the picture. It says Stanley. US PAT 3750337. I don't have one that isn't installed/removed to show the other side of it.
I need 3. If you're able to at least narrow it down to a couple of models, I would be happy to order & then return whichever doesn't work.
Thank you!
Diana