Technical Data
·Type: hinged, fixed
·Function: H120, A60, A0, weathertight, sound-reduction
·Material: Brass, steel, Aluminum alloy
·Installation method: bolted or welded
·Surface treatment: 
    a) powder paint (brass part)
    b) sand-blasted to Sa2.5 and primer (steel part)
    c) oxidized for alum. part
·Option: storm cover, window box, electric heating, temperature controller, clear view sight