This product can resist multiple shots of FMJ bullets (7.62 x 39mm, distance of 15 meters, weight of 8g， velocity of 720m/s)， equivalent to AK47 or B4+. The thickness is 32mm. The front layer is heating glass. The heater is made of a conductive metal coating on the inside of the glass. This coating is placed in the cavity between two glass layer. the layer on protection (back) side is polycarbonate. Suitable to armored vehicles
