iWindow Flex 2.0 opengaand platdakraam voor renovatie 90x180 cm KOM25 0 0900 1500 44% in combination with a 44% in combination with a single walled polycarbonate skylight Heatstop 0 opening flat roof window for renovation 40x70 cm is the ideal solution the iWindow Flex opens up to 25 cm for efficient ventilation Make your roof more energy efficient and stylish without a major renovation