A window must be tempered glass if all of the following criteria are met: more than 9 square feet in one single piece of glass ... include entry and exit doors, sidelights within 24 inches of ...

Tempered glass is designed for safety but can have imperfections. Oct. 6, 2012— -- Larry Kucharik, 64, of Oak Park, Ill. was having his morning coffee when his wife alerted him to a strange ...