This appliance is equipped with a fully tempered safety glass door.The tempered glass is four times stronger than ordinary glass and more resistant to breakage.Tempered glass can break, however it breaks into pieces with no sharp edges. Care must be taken to avoid scratching door surface or nicking edges. If the door has a scratch or nick, call our toll-free customer service number. Always unplug your oven from the outlet when not in use. Before First Use Most heating appliances produce an odor