Mounting aid for the mounting of rack mounts in frames, in particular racks for use in information technology, comprising at least two relatively to one another adjustable, in particular pivotable legs, wherein the legs at their free ends each comprises a fastening element that is arranged in an angled manner with respect to the leg and is designed for fastening the free ends of the legs to rails, in particular sheet metal angles, of the frame, said rails being directed to each other, projecting inwardly and being provided with a row of holes.