Customized version of http://www.thingiverse.com/thing:43406

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=43406

Using the following options:

_5_cellHeight = 12
_2_numCellsY = 2
_3_cellSizeX = 24
_4_cellSizeY = 16
_7_sidewall = 0.8
_9_resolution = 30
_1_numCellsX = 2
_6_externalRounding = 3
_8_bottomThickness = 1.2