February 7, 2015
I was in FL last month, helping my friend with his newly purchased home. His sliding patio door top guides were broken. I've spent over an hour looking for this part. All of the windows in his house are Anderson out of Bradenton, FL, 1969 vintage. I don't know if the sliding doors are Anderson or not. I could not find any trade marks on any part of the doors or frame. I do know that they are some of the finest sliding doors I've seen. I do not know if the Anderson doors and windows of Minnesota are related to those in FL.
February 10, 2015
Sorry, I did not ID the part. You have it. I ordered four (
80-045). I was attempting to answer the question about the top door glides and who the original manufacturer was. I later found the same part listed as an Anderson part.