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1.Frame Thickness：1.4mm；Sash Thickness：1.4mm；Out-frame：90mm width2.Glass Sash:Outside opening；Gauze Sash:Inside opening3.Hardware Slot:European Standard Design，could match any standard accessories4.This system design 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.5.Frame&Sash connected by angle connector and cut in 45°.6.Glass slot：28mm；could install with 6mm+12A+6mm tempered glass7.The distance of window and gauze is 22.2mm，could install the sharp handle8.Depending on the wall thickness，it could install the covered inside or outside and both.9.1.5m X1.5m standard window：15.5kg/m2