sliding glass door roller(s)
HR
Thanks for contacting us. I thought I knew what this was at first; I felt pretty confident that this could be replaced by our 81-144 or 81-269. Then you mentioned those flanges and I realized how different yours is.
I couldn't find anything exactly like this, but I'm going to pass this to my colleague Dave to see if he recognizes it. He has a lot more knowledge than I do in the field of sliding glass patio doors. In the meantime, look at our 81-269 and note the bumps on the side. This makes the overall width of the roller assembly 13/16". Could these work in the same capacity as those flanges? Let me know what you think.
Thanks again for waiting. Unfortunately, we couldn't find anything similar to the roller you have in your photos. I'm afraid the 81-269 is the only option we have that may work. I would check out the width of the bumps Tom mentioned and see if you could maybe install this.