The uploaded models measure 10x10mm and have a 5x5x2mm gap for the pcb and holes for 3mm screws.
The asymmetric ones are 7x10mm and have a 5x3x2mm gap.
The asymmetric code can also create the slotted block if you use a 7x3x2mm gap.
Modeled in OpenSCad so you can easily create the dimensions you need.
The author remixed this model.