... &different colors sound &heat proof, burgary proof Aluminum roller shutter door Aluminum roller shutter door Material is Using 97% purity aluminum ingot 6063T5; ... Size: 22m2 for window SLLP55-120 Slat, Max Making Size:60m2,for garage door, hurricane shutter , industrial door, factory gate Main ... in vision will be off. Pure manual only for roller shutter window Manual crank, Length: 0.6m, 0.8m,1. ...