Elegant casing. Can be adjusted upwards in steps. One-hand central locking. Mosquito protection screen roller at top, light exclusion roller blind at bottom, for optimum ventilation without being observed from outside. Width only 3.5 cm. â?¢ Mosquito protection and light exclusion roller blind with sealed side guiderails â?¢ Light exclusion blind: Inside grey, outside aluminium coated to exclude heat and cold. â?¢ Sturdy, thick mosquito net â?¢ Roller blind housing grey and white â?¢ Side guiderails can be individually shortened