Hazardous materials buildings are designed using our engineered drawings and can be designed with or without windows, a solid door or a door with a window with locking panic hardware, insulated and lined or just the outer walls, single or double doors, windows, colored or galvanized, our self-supporting buildings have no need for support columns so you can have a wide open area with no obstacles to work around. . All of our buildings are manufactured using engineered drawings and our Quality Control certified for Manufacturers of Steel Building Systems through the Canadian Standards Association (CSA) A660-10