Summary

Created to hold a collapsable ladder that I have. weights about 40lbs, holding well so far with just two wood screws into a stud. Printed with 0.2 layers, 2mm walls (4 with a 0.5mm nozzle) and 30% infill.
Probably will sag over the summer in the heat, but will have to wait and see or reprint in PETG or something like that.