... 2.Light but rigidity and consistency Aluminium Plastic Steel Window1. Glass: 5mm, 6mm, 16mm (5mm+6A+5mm), 19mm (5mm+9A+5mm ... +16A+5mm)etc; single-glass, double-glass, triple-glazing are available2. Glass type: clear glass, tempered glass, floated glass, refective glass, coated glass (Low-e glass), frosted glass3. Size: as ...