The primary use of bullet proof window film is to reinforce existing building and car windows to be able to resist the impact of outside projectiles such as a bullet. Now, we've received quotations from many bullet proof glass providers and have found that their bullet proof glass ranges in cost, but averages out to approximately $100 / square foot of window. Now, take a typical elementary school. It has roughly 3,000 square foot of window. That means that it would cost a school district approximately $300,000 / school just to armor the windows! Now take CJ Buffer's Bullet Proof Window Film in comparison. It costs approximately $4 / square foot of window. Furthermore, a maintenance crew can install the window film in sections, when they have down time. As a result, you  can armor an elementary school with our bullet proof film for a cost of approximately $12,000! Now, we can think of alot of things a school could do with an extra $288,000 such as installing protective door stops, locks, cameras and even armed guards for that matter. So the next time you consider protecting a building and think that you need to spend a bunch of money on bullet proof window glass. You might want to reconsider the costs of using our ballistic film instead.