16x20 Non-Glare Plexi - 0.090''. ACRYLIC TYPE: Non-Glare Plexi. (FRAME NOT INCLUDED) ACRYLIC SIZE: 16x20. Non-Glare Plexi is a great upgrade from standard styrene which provides added protection and crystal clear clarity for your print. Fits 16x20 Frames. As measured from the back of the frame; Not the visual part in the front. Non Glare Acrylic. Highly reflective surfaces can act like a mirror, causing glare and distracting viewers from the artwork you want to display. Non G