patio door rollers

A quick learner from cincinnati, oh says:
I have a patio door about 60 years old. The only name that I can find is Umidor. It is a 6" overall wide. Each door is 3" wide. one door slides and the other is stationary. I am looking for rollers to fit and instructions for taking the door out of the frame.
Thank You
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Tom from SWISCO responded:
For door removal, see the video below. This might help you.
Once you are able to remove the rollers, please show us a few pictures of one of them removed. Please also provide measurements. Once we have that information, we can try to find you a good match.
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