This is 31''x 8'' and 6mm thick new product is suitable for gamers, music lovers, and book readers. Its usable in office and home for display books, magazines, Games DVDs and Music CDs. Small lip on one sided of shelf to hold the items and the slight arch of shelf creates a pleasing aesthetic to match your design. Thickness and Glass Type : All shelves are 6mm or 1/4'' thick Tempered Glass. Clear glass: Its a Clear glass, which is processed to be as close to perfect as possible through a curing process yields no air bubbles. Tempered Glass :Tempered (toughened through a process of extreme heating and rapid cooling during manufacturing process) glass is two or more times stronger than annealed (Standard) glass. When broken, it shatters into many small fragments which prevent major injuries. This type of glass is intended for uses requiring superior strength and safety properties while standard glass could pose potential risk of injuries with sharpe edges in case of brakage. Packaging: We make every effort to make sure the glass shelf kit is well protected during shipping process and arrive safely. Each glass shelf kit is individually wrapped with our state of the art packaging techniques and materials, which insures its safe delivery.