Modern metal shell wood drying rooms are almost all made of aluminum alloy materials. They have a beautiful appearance and can be used to build various large drying rooms in the open air.

Wood drying rooms are generally classified according to the following main features.

The brick-concrete structure of the traditional drying room shell is low in cost and easy to build. However, there are some problems in the use of brick-concrete structure shells, such as poor corrosion resistance and cracking of the shell. In particular, the cracking of the shell not only increases the heat loss of the drying chamber, reduces the airtightness, and accelerates the destruction of the shell due to the intrusion of corrosive gases, but also seriously affects the normal use of the drying chamber. Therefore, precautions must be taken in the design and construction of the shell.