Long towel hook for glass shower cubical

A simple towel hook. Not pretty, but functional. It is designed so it can be hung from the top of a glass shower cubical. Frame thickness needs to be less than 11mm so the top hook will hang over easily (photo should clarify this). It is 20cm in length so the towel will be at a convenient height. 

I increased infill at points of stress to 50%. It seems adequately strong for its intended purpose.