Glass sliding patio door rollers

A quick learner from Otisville, MI says:
There are no markings on the hardware the only marking I can find on the door is PPG, which may be only for the glass
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Bob from SWISCO responded:

Hello there. You have an old discontinued roller that is not made anymore. With that being said, we've been told by professionals in the past that the 81-279 works well as a replacement. The adjustment screw is a little higher but the wheel rolls nicer than the noisy old tank tread style. Review the specifications below and let us know if you have any other questions.

Alternate image for 81-279
Alternate image for 81-279

A quick learner from Otisville, MI says:
Thank you Bob! That is great news! Already ordered and cant wait to get that door going again, Thank YOu!
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Bob from SWISCO responded:

You're welcome! Best of luck with the rest of the project and please don't hesitate to reach out if we can be of any further assistance.

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