... 3x3M If you really interested in our steel structure building, and would like we do the design for you, please ... Length, width, height, eave height, roof pitch, etc.2. Doors and windows: Dimension, quantity, position to put them.3. Local climate ... business, tourism and military use. The houses are all air-tight, heat-tight, warm-keeping, water-proof and anti-corrosive 2013 modern design metalgarage ...