... doors and typhoon shutter windows and doors, etc... UPVC Color: White or other colors, double-color profile and wooden color profile ... etc. Glass: Single, double, tripled 4mm, 5mm, 6mm, 8mm; Space: 6, 9, 12, 16mm. Clear glass, tempered ... gas glass, etc. Reinforcement steel: Thickness: 1.2mm, 1.5mm, 2.0mm, 2.5mm; U form galvanized steel; Seal: Rubber sealing strip, black ...