Dometic seitz s4 sliding windows. the classic model with acrylic glass panes and locking system. the front pane (from the driver’s perspective) is adjustable, the rear pane is fixed. external and internal frames are screwed together from the inside and provide durable and effective insulation.Available in 27 sizes from 500 x 450mm to 1450 x 600mm to match window type. this particular windowi is 700x400mm and grey in colour.