If your window is tempered, it is because it is near a door, bathtub, shower, or pool. There are regulations making tempered glass required in certain parts of your home. Any glass used in a door is tempered. Generally, if someone can fall through the glass, it is tempered. All doors, glass less than 20 inches from a door or the ground, all shower door glass, or any window glass located less than 60 inches from a bathtub drain level. If tempered safety glass is required by law, we will only replace the glass with tempered safety glass.