Customized version of https://www.thingiverse.com/thing:5983067

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=5983067

Using the following options:

outSideLength = 46
outSideWidth = 96
outSideHeight = 25
fillHeight = 0
shellThickness = 3
ribThickness = 10
filletRadius = 8
splitFactorPercent = 70
showBox = 1
showBoxTop = 1
showBoxBottom = 1
showBoxCombined = 0