1.Frame&Sash Thickness：1.2mm；Out-frame：90mm width2.Glass Sash:Outward opening；Gauze Sash:Inward opening3.Hardware Slot:European Standard Design，could match any standard accessories4.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.5.Frame&Sash should cut in 45 then connect by the angle connector.6.Glass slot：8mm/25mm；could install with 4mm-6mm single tempered glass or6mm+12A+6mm tempered glass7.The distance of window and gauze is 42.1mm，could install the curved handle8.Depending on the wall thickness，it could install the covered inside or outside and both.9.1.5m ×1.5m standard window：9.7kg/m²