The sky is the limit with a top-hung roof window. Operated with an elegant handle at the bottom, VELUX top-hung roof windows give you a full, open view of your skyline and maximise the amount of natural daylight that can be allowed in. We recommend top-hung roof windows if you have to, or wish to, place your window in a high position, for instance in connection with a high knee wall. Product Description: High quality moulded polyurethane with white lacquer finish. The sash can remain open in any position up to an angle of 45°. Bottom handle for convenient operation. Ventilation flap and intergrated dust and insect filter. Maintenance-free interior and exterior covers. Can be installed in roof pitches between 15° and 55°. Installation in roof pitches from 55° and 75° is possile, but specially manufactured springs must be ordered.