... &different colors sound &heat proof, burgary proof Aluminum roller shutter door Aluminum roller shutter door Material is Using 97% purity aluminum ingot 6063T5 ... motor Operator way: Electric with Manual, pure electric and remote-controlled operation, After the window opened, the oppression like ... stain in vision will be off. Pure manual only for roller shutter window Manual crank, Length: 0.6m, 0.8m,1 ...