Simple panel, obviously all plastic. As a construction, it is good, better than what I expected for its price. It is "annoying", so it is a bit tiring during installation, there is practically no space between the rails and the walls.

I deduct one star because inside the package it only has one bar for grounding and not for neutral. If you manage to fit 2-3 lines at most, you may be able to get away with a well-anchored cypress tree, but normally it requires a bar for neutrals to do the job correctly.