Glide roller (top) for mirrored bifold door

A home owner from Reston, Virginia says:
Hello! The plastic roller on the glide for our mirrored bifold door has come apart and I haven't been able to find a replacement part for it. Unfortunately, I don't know the brand name of the door (can't find it anywhere on the door itself). All I know is that we purchased the doors at Home Depot in 2011. Any ideas and suggestions would be appreciated!
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Casey from SWISCO responded:

Take a look at our Center Spring Loaded Roller, 23-099. Compare your hardware dimensions to ours. I think this may be what you are looking for.

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