This is a triple glazed top hung window with laminated glazing and has a uValue of 1.0. Please note top hung windows can be used with roof pitches between 15 and 55°. Special springs can be fitted to these windows to allow them to be used with roof pitches between 55 and 75°. If this is required please specify in the 'special instructions' section of the checkout process or give us a call on 01752 692760. This window can be used for emergency fire escape. VELUX new generation features More daylight: up to 18% larger pane area.Slim profile: slim profiles and larger pane means more glass and less frame.Thermo technology: innovative use of high performance insulation material.More comfort: a more modern and attractive design with excellent ventilation and operation control.Control bar: new design of the control bar with functionality icons.Exterior design: improved exterior finish with a softer and more discrete expression.Click-on covers: fewer screws with the new click-on covers.Top cover: slimmer top cover. Top hung roof windows GPL and GPU top hung windows open to any position up to 45°. Opens outwards for an unobstructed view and feeling of extra space. Rotates 180° for easy cleaning from the inside. These windows are intended for higher roof pitches. Lacquered natural pine finish - GPL Ideal for a traditional interior. High quality natural pine. Protective triple coat clear lacquer helps to preserve the timber of the window. - - 66 triple glazing Triple glazed. Laminated inner pane. Toughened outer pane. Anti-dew and easy to clean coating to keep windows clean for longer. Properties 10 year guarantee on windows and flashings. BBA certified.