Automatic version of our bullet-resistant shutter for doors. Deployed with a push of a button, this covers the enitre door from the outside to prevent bullets from entering the classroom. The cover consists of three main layers to protect anyone inside the classrooms. There are 2 layers of .75 inch thick fiberglass and metal on the front and back sandwiching a layer of military-grade kevlar in between. This shade is capable of stopping a .22 caliber bullet round up to a 5.56.