Another Magnetic Poster Hanger

Heavily inspired by the nice design from AmieDD and printed a TON of my own version to hang (non-destructively) my Ralph McQuarrie 'Empire Strikes Back' concept art posters for display in the basement. These are 270mm X 15mm and hold 2 or 3 of these magnets: https://www.amazon.com/gp/product/B0753ZPBLQ/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1