Closet Roller Hardware

Hi The pictures are from big closet doors with metal frames from an apartment built in the 1980's. There is another one that looks the same but has two rollers to hold the heavier mirror side.

These doors are big, 4 x 8 ft. The hardware clips into the metal frame made of tube about an inch square. The mirror and some very thin hardboard are attached to the frames directly so there is nothing to screw into. These door frames also have clips at bottom with plastic ears that fit into the bottom track, we have 21 apartments and and all the bottom clips are broken. Can you help. No markings except 'Patent Pending'

Thank you, Alec

You may also want to look at 23-021 and 23-055.