The plastic wheel is broken; so door comes off the guiding rail; need to replace it. there is a Hook for right side of door (see Pic); and similar wheel for assembly with hook on left side of door. The width from hook to the other side is 1.7 inches.
Casey from SWISCO responded:
April 14, 2021
Hello,
Take a look and see how our 23-069 top roller pair compares to yours. Thanks for posting!