Bulletproof glass, ballistic glass, transparent armor or bullet-resistant glass whatever you want to call it. I have 2 panels that came off of a up-armored hemitt wrecker. the finsh is cloudy on it no cracks and its not all scuffed up. 39 x 24 x 1 3/4 is rated to stop 7.62mm. $100 each ftf no shipping willing to trade for ammo glock mags ruger 22-45 outdoor stuff, camping stove stuff like that. make and offer.