I cannot find a manufacturer plate on these doors. They are from a building constructed around 1975. I need four of the upper wheels (with the "W" spring) and four of the lower wheels (JPEG IDs ending in -734 and -923).
I think the lower wheels also may have had a straight spring (shown in picture) to force the wheel down which snapped off when I removed it from the screen frame.
I am rehabbing an apartment for a new renter and it would be sweet if I can get these sliding screens moving easily again. I think the upper "W" spring roller is a pretty common part but I have seen nothing that looks like the bottom roller.
Many thanks for any assistance you can provide. -George