... thickness Rockwool sandwich panel-3. 820# 0.476mm or 0.5mm Corrugated Galvanized Steel sheet with different Color(2). Internal Wall ... 3. 820# 0.476mm or 0.5mm Corrugated Galvanized Steel sheet with different Color(4). Skylight: 820# or 1040# Glass Fiber Reinforced ... drilling screw, rivet, inner and outer cullies, rainspout, trimming sheet, glass cement, etc. you can buy them according to your exact ...