mirror bifold door part which hold the hinges and rollers on the corners.
A quick learner from Atlanta says:
July 4, 2019
DSH and 60012 are on the part as shown in picture
Paul from SWISCO responded:
July 9, 2019
Thank you for posting on our discussion board. Our 23-409 corner connector looks like it could be a good match for you. Take a closer look and see what you think.