The frame walls are based on supporting woods made of wood with a sheathing on both sides, leaf, and also can be epraoty. The space from the inside of the external walls is filled with insulation. The construction of frame walls is quite economical if you take into account the costs of materials and the cost of doing work. They need fewer wood than for example, bearing or logs, and when using insulation two to three times easier. If you are looking for a metal box for a metallic tool, you can buy it at the given link.