This is a Gridfinity 4x1x2 module measuring B=167.5mm H=45mm D=83.5mm (external measurements) with stacking lip, using the parametric model made by InaniaEtVana https://www.printables.com/model/491143-parametric-gridfinity-bottoms-gridfinity-model-bas where i set the height to 42mm (couldn't resist and they fit perfectly in the drawer i made it for).
This one also fit the BIQU Belt Tension Tool pretty nice, i cut off some of the packing foam that was included, leaving the with to approximately 80mm.
The author remixed this model.
.stl and .step files for a Gridfinity 4x1x2 box