Check first at which size you want to print the spice rack. Some boxes are very large, and will exceed the print size of a Prusa mini, or even a regular MK3S. Plan out how you want your spice rack to look, and then scale the boxes so the largest box you want still fits on your print bed, either using the OpenSCAD file, or by scaling all STLs by the same factor.
The author hasn't provided the model origin yet.