4 Corner Holes Pre-drilled for easy mounting on your walls. Metal is clearly best for quality and endurance and stands out against alternatives like posters or plastic products. Large Social Distancing Signs are printed in high resolution. Graphics, logos, photos and tints are reproduced faithfully. Product upgrade: thickness increased by 10% Makes an excellent gift idea: Got a friend with a new home? Will be celebrating his/her birthday soon? Just finished renovating his man cave