Note: Most glass can be tempered.

What is the difference between Tempered and Non Tempered (annealed) glass?

• Toughened or tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with annealed glass. Tempering puts the outer surfaces into compression and the inner surfaces into tension. Such stresses cause the glass, when broken, to crumble into small granular chunks instead of splintering into jagged shards as annealed glass creates. The granular chunks are less likely to cause injury. -Tempered glass is approximately 3-4x stronger than annealed glass.
• Most common uses for tempered glass include: Shower doors, entrance doors, railing glass, fridge trays, patio tables, car door glass..
• Regular annealed glass is first cut/fabricated and polished, and then put into a large "oven" which heats and cools the glass at extreme temperatures. When it rolls out the other end it is tempered. After glass is tempered it is unable to be altered or re-cut. Always check the corner of your glass for a small etched safety stamp which indicates it will pass code.