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

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

Using the following options:

_1_numCellsX = 3
_2_numCellsY = 3
_3_cellSizeX = 30
_4_cellSizeY = 30
_5_cellHeight = 15
_6_externalRounding = 5
_7_sidewall = 0.8
_8_bottomThickness = 1.2
_9_resolution = 30