Replacement wheel cartridges for a sliding glass patio door

Regards, Steve



Hello, Steve. I'm afraid it's not possible to identify a roller while it's still installed like this. Full removal is necessary for identification.
While it's removed, please make sure to show me a clear picture of the side, top, and back end. I also suggest getting detailed measurements and writing them down, as you'll need them for the sake of comparison. Housing width and height are paramount, as is wheel diameter.






Thank you. It's tough to make out your precise dimensions from just a ruler held up to the part, but my two main recommendations are the 81-030 and 81-138.
Between the two I think the 81-030 looks closest, but the issue is that your wheels appear to be less than 1" in diameter. Can you verify that size? The 81-030 wheels are fairly large at 1-1/4".
The 81-138 wheels are much smaller at 1-1/8", but the housing height is only 1". Yours looks larger than that, but again it's difficult to tell. I definitely recommend reviewing our dimensions carefully to verify the better option.



With the well where the cartridge is installed being exactly 1 1/8" from interior to the exterior, it's probably best if I err on the side of caution and get the smaller cartridge.
Thank you for your help!



In my experience, you need the housing to be the exact same size as the original. The housing size matching is much, much more important than the wheel size matching. When it comes to the wheel, you can always adjust it higher or lower to make up for a difference in size, but if the housing isn't identical then it won't fit in the door properly and the whole thing is rendered useless. Make sure to triple check your housing height and width before you buy anything.