Need sliding glass door roller replacements

A handy person from Charleston, SC says:

No name or markings found on door or rollers. Part coded 81-229 looks like what I have. Are you able to confirm or make a recommendation? Let me know if I could try to give you more info. Thanks

Mark

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Tom from SWISCO responded:

Hey, Mark. I agree that the 81-229 looks very similar, though I can't really make out you precise dimensions from just a tape measure in a photo. As long as our dimensions match yours, though, then it should work well.

A handy person from Charleston, SC says:
Product description on site does not provide overall dimensions. Photos show casing 1 5/8 L X 1 1/16 H X 9/16 W. What does 81-229 measure?
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Tom from SWISCO responded:

We do have dimensions on the 81-229 store page. I'm looking at them right now. If you look under the main image, you'll see thumbnails that you can cycle through to see different views/information. I will also post the dimensions here for your convenience.

Alternate image for 81-229
Alternate image for 81-229
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