... Slat option: 37mm,39mm, 45mm,55mm,,77mm,90mm,100mm Features:39 aluminum roller shutter slat Aluminum sheet with painting and high ... can be available.White, champagne,coffee, brown, silver , green and type is optional.Easily install, maintenance and cleaning and it is ... operation with quiet voice and Slide smoothly.Environmental and fashionable. 39 roller shutter