Bought the larger sizes for notices advertising our Village Hall events. It was difficult finding something large enough that motorists could read at a glance. These large letters have been perfect, I paint the boards with white undercoat over the last advert and then re-print using indelible pens. The results are perfect and comments have been received about how good the boards look. They are easy to use, just pencil a line and follow the indicators on the blocks of letters.