... Details Frame Visible/Half-visible/Invisible systemEXPOSED SURFACE Glass ThicknessSingle Glass: 3mm-12mm.DoubleGlass: 5mm+6A+5mm/5mm+ ... 6mm /or the othersTypeTempered glass & Heat Strengthened glass, Floated glass,Reflective glass, Argon gas glass,Coated glass (Low-E-glass), Insulating glass, Decorative glass,etc.ColorTinted (Grey/Green ... , Guangdong, China Aluminum Frame Curtain Wall with Low-E Glass