Roof window with dimensions 55x78 cm Tondach Comfort. Made of an impregnated wooden frame covered with a colorless acrylic coating and with external profiles of anthracite-grey aluminum. Central opening axis. Bottom opening handle. Ventilation valve with a capacity of 20 m3/h. Standard double glazing with argon. U of the frame = 1.3W / m2K. U of the glass = 1.1W / m2K. Noise insulation - R of the window = 31 dB. Warranty 5 years when using the Comfort flashing system.