Great Lakes' NEMA 12 Wall Mounts are constructed to be compliant with the National Electrical Manufacturers Association's Type 12 standard. NEMA 12 wall mounts are intended for indoor use to provide a degree of protection to the equipment inside the enclosure against dust, falling dirt, water and noncorrosive liquids. These enclosures are also intended to provide a degree of protection to personnel against access to hazardous parts which may be mounted within the enclosure.