The original model is 3mm thick, this one I made it 5mm to be more resistant and also the hanger distance space is less since the previous (model in my case) was loose when placing it on to the cabinet doors, I added a radious on the top corner to reduce stress from the load and make it more resistant. 

It has worked well for loads around 5kg so far.

PLA, layer: 0.2, infill 20% cubic