I'm not sure of the item number for this, or even what this part is called. Two of these rollers sit on the top edge of my sliding glass door. I'm interested in ordering replacement parts
Paul from SWISCO responded:
October 9, 2019
We appreciate your inquiry. Take a look at our 84-077 peachtree patio door dual roller guide. it shows some resemblance to your part. See if the measurements are a match.