A total of 8 different Windowed Bins for Gridfinity, sizes, with or without divider etc,.

This design is without any assembly just slide in the glass after printing. And yes its also stackable!

The glass used is standard Microscope Blank Slides, 76x25 mm; Thickness: 1.0–1.2 mm. 

Im using Levenhuk G50 from Amazon:  Click for link

Note: Since the thickness of the glass can differ 0.2 mm… sometimes you might need a bit of lube to get the glass in place, and sometimes a bit of glue. Ive never had to do this while testing.