In the industrial sector computer systems are used for controlling in dusty and humid surroundings. The apra PC protection enclosure allows using standard computers within an industrial environment. The sheet steel design with a front and rear door is very robust. Equipped with screw-on feet or wall brackets (see accessories) it can either be free-standing or as a wall mounted housing. Due to a seperable cable entry up to 5 external cables can be fed separately into the mousing without having to remove any plugs. The installation of 19″-racks up to 4 U is possible by separately screwable grid bars and slide rails (see accessories).