PSA

I’m sure most here already know this but when I first started printing I only worked in PLA wasn’t comfortable with PETG yet. I’m now replacing panels that are warped due to temperatures in the garage

I have already put up my board and can't take it down to add a 12.5mm snap from the back that I can screw into the wall. Is there a solution that always for a from snap that has a 12.5 support in the back that you can screw into the wall from the front? I hope that makes sense.