... for color 3005 aluminum alloy manual,electric,remote control anti-weather,Anti-thelf 1,Structure of roller shutter.(1) End Cap, (2 ... , operation ways: hand crank, electric.6, control system: remote control, switch, hand crank. 7, Model of shutter slat: 32mm, 43mm 8, ... material of shutter slat: aluminum alloy 3005 ...