The RCI Custom Products RS rackmount equipment shelves are designed to mount in any standard EIA equipment cabinet. The units can be ordered in two or three rack spaces. The shelves are manufactured from 0.062 (16 gauge) aluminum. These one piece assemblies offer additional strength over conventional steel shelves as a result of the heavy gauge aluminum material, the one piece fabrication process and the 1/2" lip on the front and back of the shelf.