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 (ABS) The charger unit can be crewed down on two wood blocks of 44mm high at the back of the wall panel.