How are the rollers connected to the door?

A home owner from Barrington, IL says:
I took down two sets of sliding glass closet doors which appear to use the 23-005 roller. I forgot and am confused how it ever was connected to the door because the screw holes are on the top, not the sides. Can you explain to me how to reconnect the rollers to the doors?

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Mike from SWISCO responded:
Here are instructions on how to install our sliding closet door track kits (which use the 23-004 & 23-005 rollers).
Send us some pictures if you need help. I would like to see your original roller, your door (where the roller is installed), and any other photos you think may be helpful.

Are there any names or stamps on your sliding door hardware?
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