Rittal's interior rails make mounting equipment to the inside of an enclosure, without using the mounting plate or drilling holes into the wall of the enclosure, an easier task. The interior rails have been designed to fit within a range of enclosures, with various depths, to eliminate the need for drilling holes in the sides, base or top of the enclosure, which could affect water ingress or corrosion resistance. Rails are simply fitted by locating them between the rear wall and the door jamb of the enclosure and friction screws are then tightened to create a strong mechanical fixing point for a number of accessories.