55 Glass - #2 Gray Glass

#2 Gray Glass #2 Gray and Clear Glass #2 Gray, Gray and Bronze Glass #2 Gray glass is the darkest pure glass and is only available in 1/4". It allows 8% light transmission. Therefore, with 92% of visible light blocked, it can be considered black glass. #2 gray glass used as a glass protector top will completely hide the surface underneath. Dark gray glass is often used in widows and has an effect similar to dark sunglasses.