... colors sound &heat proof, burgary proof Aluminum roller shutter door Aluminum roller shutter door Material is Using 97% purity ... shutter function: Anti-sunlight, anti-rust, anti-lacerated , anti-mosquito , water-proof, theft-proof, hurricane-proof , radiation-proof , ... noise-proof , warm-keeping .Save energy, when the roller shutter closed, can saving 30% energy, obstructed 100% sunshine. ...