1)Anti-corrosion
Opening and closing
but we've add thermal break structure
Effect: Environmental protection and energy saving,Safe and durable
Various colors and surface treatments for a flexible choice to match your decoration
Energy saving double glass window aluminium awning windows and doors on China WDMA Type:Sliding Windows 1)Anti-corrosionProduct Description Product Energy saving double glass window aluminium awning windows and doors Features Energy saving and Eco friendly Sound and heat insulation Good air and water proof Anti aging and easy maintenance Glass Float glass, Insulated glass, Tempered glass, Low e glass, Frosted glass, Reflective glass, Decorative glass Thickness: 4mm, 5mm, 6mm, 8mm; Space: 6mm, 9mm, 12mm, 16mm, etc. Size Customized Frame Aluminum Hardware Hinge, handle