Searching for Sliding Glass Door Roller

Thanks for your post! Can you clarify what kind of door this is used for? It looks like one of our mirror door rollers but can't be sure unless I have dimensions. Are you able to provide the measurements for us? 

Unfortunately, patio door rollers are very brand-independent, so without knowing the width and thickness of your roller's assembly, as well as the diameter of the wheel, I can't say for absolute certainty what might work. Start by taking a look at our 81-243. Carefully compare the dimensions to your old roller and see if this might work for you.