Thanks for reaching out! It appears our agents suggested to review and compare the dimensions for our 81-243. I'm sorry to hear that your order did not work out for you.
I would suggest takin a look at our 81-229 Sliding Glass Door Roller. Be sure carefully compare the dimensions and the design of the roller to confirm that this is the right replacement.
Alternate image for 81-229
If this is not a match, I'll need to see a clear photo of the back of the roller to see the shape of the hook and the design of the housing. Also, unfortunately, it is difficult to confirm accurate measurements from the photos of the measuring tape. Can you provide the measurements, written out?
Once I have this information we can move forward to confirm if there is a suitable replacement for your existing rollers.