ANNEALED GLASS is not tempered. It can break into large pieces that can fall and become quite dangerous on the way down. Unlike Tempered Safety Glass that is cut to size, then reheated in the ovens, so that when it breaks - it falls into thousands of 1/4" pieces that is less likely to hurt anyone.
Annealed glass is glass that has not been heat strengthened to the degree of tempered glass. Unlike tempered glass, annealed glass will break apart in large pieces. At Bear Glass NJ we fabricate mostly tempered glass but offer annealed glass on request.