Question regarding 81-289

I'm afraid it's not possible to identify patio door rollers based on the label alone. This doesn't tell me anything about what hardware is used on your door.

The only way to identify your roller is to use the original as a reference. That will require taking the door down, removing the old roller, and then comparing its design and dimensions to the 81-289 you were looking at. This is an extensive project that will require an extra pair of hands and a free afternoon. It's not a quick fix at all. You need to brace yourself for the time and labor required for this kind of job.