Forty-five years ago someone thought it would be a good idea to repurpose commercial building floor lights for my stairwell. I've searched everywhere for anything that would fit, but I can't even find evidence that this style was ever manufactured.  I took a pattern for a floor vent, stripped the back off and merged it into a single mesh. I added reinforced areas for the switch, outlet, and screw holes. Then I created a diffuser and gasket.

I used transparent Overture PETG for the diffuser. It worked very well. I used Amolen Rosewood PLA for the frame itself and Bambu TPU for the gasket. supports were used for the frame, with support PLA (Bambu filament). This was a bit difficult to pick out, but the Amolen PLA handled it well.