no numbers/names

Hello,

I believe you could use either of the two rollers we've related for you. You might be able to use the 81-125 that should fit right into your bottom door rail. However, the 81-023 would take a little more work to install, which I have done in the past. You will need to drill and countersink a hole in the bottom of the door rail to install the 33-103 flat head screw to secure the roller in the door rail. 

If you'd prefer to keep your existing roller, you should be able to use the 81-266 or the 81-272 roller and axle kit depending on which size wheel you need. Take a look and see which option would be best for your repair. Thanks for posting!