Just a quick test of exporting from Max. This should be about 28mm in height.
Of course, as this was a test I have now learned two things. First, export in inches and not mm or the model will be too small to print. Secondly, the model needs to be rotated or it ends up on its face as you can see from the image! Still, good to know :)
1.504 w x
0.818 d x
0.592 w x
0.322 d x