Dometic seitz s4 hinged windows. proven millions of times: complete windows for motorhomes and caravans with telescopic hinges for convenient ventilation and built-in darkening roller blinds and fly screens. this outstanding insulation matches to construction standards for homes. security locking system prevents windows from being opened from the outside.Available in 50 sizes from 350 x 500mm to 1600 x 600mm to match the window type.Windows:a = overall widthb = overall heightc = width of clearance dimensiond = height of clearance dimension