iWindow Flex 2.0 opengaand platdakraam voor renovatie 75x105 cm Insulating Glass:Double glazing HR++ (1.0 W m²K) iWindow2 Is this electric roof access Is this electric roof access with 30 20 PVC curb 1000 x 2200 mm Please note making it very comfortable to wear the iWindow Flex opens up to 25 cm for efficient ventilation Make your roof more energy efficient and stylish without major renovation work