I didn't want to have left over grid that I would have no use for, so this model is the 100x100mm cut down to 27x27mm. The holes are still 3 mm wide.
Designed model for a 0.4mm nozzle and 0.2mm layer height. The grid lines are 0.8mm thick, and the model is 0.6mm tall
The author remixed this model.
Grid cut down to 27x27mm
Height increased by .2 to a total of .6