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1) The frame of the roller shutter, fixed on the wall
2) Our standard thickness of the aluminum is 1mm,if you need orther thickness, please let me know
3) Our regular color is white, but if you want other color please let me know
4) Size of the bottom beam is 40mm*8.2mm
5) Corner radius is R0.5
6) Toleance is IT10
7) Packing:12 pieces in one carton,if you like orther packing, we can do it
8) Other accessories: