1.Frame&Sash Thickness：1.4mm；Out-frame：85mm width2.Glass Sash:Outward opening；Gauze Sash:Inward opening3.Frame and central column share the same aluminium profile4.Hardware Slot:European Standard Design，could match any standard accessories5.This system designs with three cavity to meet the requirement of energy-saving，and it always use the wood grain on the indoor and other surface treatment on the outdoor part.6.Frame&Sash should cut in 45 then connect by the angle connector.7.Glass slot：32mm；could install with 6mm+15A+6mm tempered glass8.The distance of window and gauze is 23.1mm，could install the sharp handle