The Acrylic Mounting consist of special printing photographic paper, high grade silicone glue, aluminum support frame, white backing vinyl  and one piece of laser cut 4.5mm or 6mm clear acrylic. We use Acrylic as an alternative to glass as it is much lighter and does not break. Acrylic however does slightly bow especially with larger panels, but this is not noticeable face on and the aluminum support on the back minimizes the bowing of the acrylic over the years.