A combination of single or double pane hinged doors giving superb thermal performance with U-Values downto 1.8 W/m2K. Face widths up to 147mm allow large areas of visible glass and fully tested to 500,000 cycles. With Class 5A water-tightness, Class C3 wind resistance and an air permeability rating of Class 2 these doors have a truly great performance. These doors can be specified as opening outwards or inwards