bifold door slider part(old style)

The doors are old, ca 70th, I guess. Not sure of the official name for this part - it is used to secure the top poll/roller.

For FreeCad users:
Dimensions:
Pole: D~9mm
Screw: D~5mm(v1), D 6mm(v2)
20.5x16x12.1 mm

+ 08-05-17: Added scad file - thus customizable, with parameter descriptions.