Customized version of https://www.thingiverse.com/thing:59332

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=59332

Using the following options:

_part = box
_width = 155
_length = 50
_height = 40
_rounding = 4
_minimumWallThickness = 1.2
_sidewallThickness = 1.2
_horizontalThickness = 1.2
_magnetDiameter = 5.2
_magnetHeight = 3
_hingeGap = 0.3