Steca solar charger bezel

I have a Steca PR1010 solar charger.
This units is made to mount on top of a surface.
The result is a bulky unit with visible wires underneath it.

I designed a bezel to mount the unit behind a wall surface.
This model is made for 9mm wall in my camper van, but is easy to alter in 123d design

It consists of two parts;
part A - the main part
part B - an optional strip to cover the gap on top between the bezel and the charger. It can be glued to part A with glue (PLA) or acetone (A