S4 is supplied as a complete kit of window and integrated Blind flyscreen system, all in one box. Easy installation and long life span are guaranteed: Outer and inner frame are simply screwed together from inside, clamping the window to the vehicle wall, for a lasting and continuous seal. For wall thicknesses 26 to 41mm (requires trimming of inner frame) Outer Black RAL9005 frame with Grey tinted acrylic double glazed pane. Inner frame is cream-white RAL9001. Blind material is white to the interior with a thermally reflective silver aluminised coating to the outside. Fly net is white.