Bob from SWISCO responded:
March 17, 2024
Thanks for posting. This looks like a track with recessed grooves for convex rollers. If that is correct, see our 23-240 and the other-sized variants I have listed on this page. A track with the overall shape like yours is no longer made; but so long as the distance between the grooves matches, as shown below, I think this can work for you. Take a look and let me know if you have further questions. Profile view of sliding mirror door bottom track
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