Aluminium doesn't require painting, will not warp or rot and its dimensional stability ensures years of trouble free operation. Two types: 1) 90-angle 2) 45-angle Surface finish: 1) anodizing (clear, satin, bronze, black, golden, silver, other multicolor) 2) electrophoresis 3) powder coating, PVDF, polishing, shot blasting, etc. Opening methods: turning, sliding, fixing Aluminium awning windows ...