Abstract: A mounting bracket for a slotted upright featuring a channel member having a channel and a forwardly extending element. An insert is positioned within the channel member and has L-shaped fingers extending through the channel. The insert is secured within the channel member by fastening screws through the channel member and into the insert. When the bracket is placed on a slotted upright so that the L-shaped fingers of the insert are within the upright slots, tightening of the screws causes the fingers of the insert to engage the slots of the slotted upright and pushes the rear side of the channel member tightly against the slotted upright. This creates an overlying relationship where the L-shaped fingers and rear side of the channel member sandwich the slotted upright to provide an extremely secure connection. The mounting bracket is easily installed or removed by tightening or loosening the screws.