Printing a single layer in parallel lines without walls?

[fred_dot_u]

I've configured my slicer for a 0.1 mm nozzle with 0.050 mm layer height, which is outside my printer's capacity, but I won't be printing it (grin). Typically one would want a layer height of no more than 75 percent of the nozzle diameter. If your printer is capable of such parameters and you have such a small nozzle, all the better.

I created code in OpenSCAD to present the model using the reference figures you've provided:

for (x = [0 : 0.25 : 50])
translate([x , 0, 0])
cube([0.2, 50, 0.2]);

This results in a viable STL file and my slicer accepts it.
The images are the slicer results in print preview and the rendering in OpenSCAD.

I've attached the STL for your perusal.