... -120 Slat, Max Making Size:60m2,for garage door, hurricane shutter , industrial door, factory gate Main color : White, cream ... treat :powder-coating / galvanized Guarantee period : 2 Years Rolling shutter function: Anti-sunlight, anti-rust, anti-lacerated , anti-mosquito ... noise-proof , warm-keeping .Save energy, when the roller shutter closed, can saving 30% energy, obstructed 100% sunshine. electric ...