Acrylic is a transparent plastic that have gained widespread use because it's ability replace the glass. In everyday products it is particular used for signs, sales displays, roof windows, lenses and screens. But also for demanding constructions such as windows in submarines and fiber optics in the flat-screen TV's. 
    There is no plastics with greater light transmission, which even allow more light to pass through than glass. Since it also has numerous advantages over glass it is in many cases only the glass robustness against scratches, which saves it from being replaced with acrylic. Eg. the windscreen in a car is a very expensive product that, if replaced with acrylic, can be manufactured at a fraction of the price.

    It would just soon be scratched by the wipers. In the section "Acrylic versus glass" comparable properties of acrylic and glass are listed. 
    Acrylic is approved for use within the food Industri and used in shops for food storing. Both in delicacy and vegetable areas. Looking closely, you will discover that all types of businesses using large quantities of acrylic - signs, showcases, shelves, guards and gates in all colors. 
    A more impressive uses of acrylic is the big aquariums around the world. The panoramic windows are made of glued acrylic blocks.