3/16″ Thick Clear Acrylic
The sign holder in the front is 8.5″ wide x 11″ high and the box is 8″ deep at the base and 6″ at the top. That allows the sign holder front to be tilted back. The lid is hinged and has a hasp and padlock. The slot size is 5″ long x 3/8″ wide. The back can be drilled with 2 holes for wall mounting.