Our Denver Anti-Graffiti Film is a 2 ply, 4mil product. It’s an excellent preventative barrier for glass, elevators, escalators, building directories and mirrors that are susceptible to vandalism and graffiti. These films have a very aggressive adhesive system that strengthens the product, helping to protect the glazing system and it cannot be easily removed. This durable exterior film won’t let acid penetrate on a vertical surface. If acid is applied it will appear in the form of harmless droplets beading up on the film which can easily be wiped off with soap and water with no harm to the film. Without the anti-graffiti film the acid would etch into the glass causing permanent and unsightly damage.