rollers for sliding door

Thanks for writing in. Unfortunately, the only reliable way of identifying the replacement rollers you need is to see the originals out of the door. Sliding door rollers are incredibly brand-independent. The only way to know with confidence what you have is to see photos of the original; the width and height of the entire assembly, as well as the diameter of the wheels, is also valuable to know. 

Now, all that said, Acorn Dorwal has been associated with a few of our rollers in the past. See the 81-030 as you surmised, as well as the 81-005, 81-027, and 81-174. But again, the only to really know if one of these might be what you need is to compare the dimensions with your original hardware. 

For information on how to remove and replace these rollers, see the video below. If you wish to wait for warmer weather, we'll be here if you need us for identification. Thanks. 

I'm afraid that we don't have a roller like the 81-030 but with a 1-1/8" diameter. To be honest, I think you could still use the 81-030 as-is and simply adjust it to make up the difference. If you turn that back screw it will raise the housing up and down. I think there's a good chance that will fix it for you.