Silverline 5500/5700 door rollers
Thanks
Unti I know the replacement is correct, I have not taken them out of the door, nor taken the door out of the frame yet. Thank you.
The only time we've verifiably cross-referenced that code to the 81-156 is with the original poster in this very discussion. So I can't really guarantee this roller is what you need. With a few exceptions, sliding glass door rollers are impossible to identify off of old codes or even the brand name. There's just too much variability to know. I'm afraid the only way to be certain in most cases, including this one, is to remove the old rollers and compare the dimensions. See the videos below.
I'm afraid that they were not verified, no. The only way we will know that is to see the originals, which will require taking down the door and removing them as per the instructions above.
I apologize for the inconvenience.