Shatter-resistant styrene sheets, protected on both sides with a peel-off polythene film. Can be used dry point etching.
UV stabilizer in the styrene absorbs many of the damaging UV wavelengths in natural and artificial light. In absorbing the UV, the panels themselves may eventually discolour. This styrene is not optical grade.
The non-glare (Part no. 772A) has a very slightly pebbly surface which does not seem to show smears as much as the clear.
To cut styrene - score it heavily, using a knife or blade or a wall cutter. Place it with the scored line up, just over the edge of the workbench and apply pressure - it will break with a bang.