... Roller Door(2). Internal Door: 50mm Thickness EPS sandwich panel with aluminum alloy door frame(3). Window: UPVC Widow or ... aluminum alloy window frame with glass.4. Drainage parts(1).Galvanized water channel: 2mm ... also have so many accessories, for example, steel bracket, bolts, self-drilling screw, rivet, inner and outer cullies, rainspout, trimming sheet, glass ...