... Color of material, Dimensions, AR (anti-reflectivity), Type of intermediate layers, Construction, Gasket type, Frame finish1. Window materialOptical glass, Plexiglas (PMMA), Makrolon ... or by means of a conductive gasket. 7. Frame FinishWindows can be supplied from the factory as complete ... assembly. The appropriate gasket is integrated in the frame to provide a good contact between mesh and enclosure ...