This clear acrylic sheet has a hard coating to prevent scatches from abrasion on both sides. this coating is also chemical resistant - a good choice when you want a window that needs cleaning regularly - this will last for years with no wear and tear. ACRYLITE AR sheet offers 40 times greater resistance to marring and chemical attack than uncoated acrylic. They are ideal for demanding applications where frequent handling, heavy traffic and regular cleaning are commonplace. ACRYLITE AR is available with coating on one or both sides. While two-side coated sheet provides maximum protection, one-side coated sheet offers economical advantages for applications where only one side of the sheet is exposed.