Commonly used electrical back box include type 86, type 120, octagon electrical box and others.

The electrical wall box is also divided to metal electrical box and PVC electrical box. Different electrical box with different materials are selected according to different environments.

Type 86, the size of the electrical back box is about 80mm*80mm, and the size of the panel is about 86mm*86mm. It is the most widely used electrical back box. It can be widely used in various buildings and decoration. The 86 type panels are also divided into single boxes and multiple boxes (consisting of two and more than two boxes).

Type 120, there are type 120/60 and 120/120.

The size of the 120/60 is about 114mm*54mm, and the size of the panel is about 120mm*60mm.

The size of the 120/120 is about 114mm*114mm. The panel size is about 120mm*120mm.

Octagon electrical box is usually used for barge connection of building lamp holder line.

Special function electrical box. Because of their different uses, there are a wide variety of models and categories. It is mainly used for transition connection of lines.