1/8" (3mm) Mirror Acrylic Plexiglass Plastic Sheet 12 " x 12" Grey Backing AZM Package contains 1 sheet of 12"x12" mirror acrylic 1/8" thickness The mirror is clear regular mirror. The backing is grey Acrylic is 19 times stronger than regular class and will not shatter in pieces, will only crack like a plastic piece Please allow +(-) 1/8" for size. Actual size is around 11-7/8"x11-7/8" Sheet comes with film masking that's easy to peel on the side protecting the mirror! For custom size and bulk orders please contact for pricing!