... 30years for color 3005 aluminum alloy manual,electric,remote control anti-weather anti-thelf 1,Structure of roller shutter.(1) End Cap, ... operation ways: hand crank, electric.6, control system: remote control, switch, hand crank. 7, Model of shutter slat: 32mm, 43mm 8, material ... guarantee. 50N.m standard.; 50N.m it's comebine one of manual and electric. 12, function: insulated, anti-bad weather, safe ...