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