aluminum roller shutter window CE,TUV,RoHS Color: white, cream Material: aluminum alloy free-noise rolling shutterSurface treated ... manual roller shutterManual crank, Length: 0.5m——2m Rolling shutter Function Anti-sunlight, anti-rust, anti-lacerated , ... -keeping .Save energy design, when the roller shutter closed, can saving 30% energy, obstructed 100% sunshine. Free-noise rolling shutter window