... CE,TUV,RoHS fireproof roller shutters Components keep color period 15 years Main ... only for manual roller shutter Manual crank, Length: 0.5m——2m Rolling shutter Function Anti-sunlight, anti-rust, anti-lacerated , anti-mosquito , ... water-proof, theft-proof, hurricane-proo , radiation-proof , noise-proof , warm-keeping .Save energy design, when the roller ...