Sliding glass door

I'm afraid these photos don't tell me who made the door. Even if you had a manufacturer name, that likely wouldn't be enough to ID the rollers.

When it comes to identifying and replacing rollers, removal of the originals is always a mandatory first step. I know it's a hassle to have to take the door down twice, but that's the job. You'll want an extra pair of hands and an afternoon to do it. There's no other way.

Once the rollers are out, you can submit photos here for us to review. I need to see the back end, top, and sides. You'll also want to write down its dimensions for the sake of comparison.