I decided to use PETG. I decided to increase the overall strength in the slicer with modifiers, no supports. See the attached 3MF file for detailed print settings.
Part List:
Printed parts [x2]
Nut M4 [x2]
Wood Screw 4x50 [x2]
Plastic Dowel 6x30 [x2]
Assembly Instructions:
Please remember that the holes spacing is 10 mm.
Press the M4 nut into the plastic part. Use a screw or pliers.
Insert a plastic dowel into the drilled hole in the wall.
Fasten the plastic part to the wall with a wood screw.
Screw the IKEA Skadis pegboard with the original M4 screws.
Custom modification:
If you want to modify the model, I am attaching the STEP file and a link to my OnShape.