Headphones hanger

I needed a hanger for my headphones to mount it to the shelves next to my desk. This is a rack from bauhaus (link below)Print it in the orientation shown in the picturesI can change it if any of you need me to, just provide the measurements of the corner column of the rack. https://www.bauhaus.si/zeleznina/organizacija-prostora/regali/kovinski-regali/kovinski-regal-futur-250-v-180-x-s-120-x-g-60-cm-nosilnost-250-kg-polico