1.Frame&Sash Thickness:1.4mm;;;;;Out-frame:88mm width2.Glass Sash:Outward Opening;;;;;Gauze Sash:Inward Opening3.Hardware Slot:K Slot Design,,,no necessary to milling the slot to install with the wind brace4.Frame&Sash should cut in 45then connect by the angle connector.5.Glass slot:25mm;;;;;could install with 5mm+12A+5mm tempered glass6.The distance of window and gauze is 40.4mm,,,could install Y handle