Tempered glass is the most popular safety glass used that meets Uniform Building Code standards. The heating and cooling process involved in making tempered glass produces a product four to five times stronger than standard annealed glass. Vitro America's tempered safety glass is recommended for use as safety glazing for potentially hazardous locations including entrance doors, patio doors, side lites, and shower doors. If damaged, tempered glass will shatter into small, blunt glass fragments rather than sharper, more dangerous pieces. Tempered glass is the most economical means of meeting safety glazing requirements.