I bought this keyboard tray for several reasons 1) it fit the narrow space I have between drawers at a 25" width as opposed to many keyboards that are 28-29" wide. Even w/ 25", I am able to fit a standard keyboard and mouse, though the edge of my mouse pad is under the edge of my keyboard. 2) It has a single, central attachment point to the desk, and swivels left and right. Because of this, I can swivel it to slide under a corner desk; 3) It has adjustable height and is stable where you put it. It was fairly easy to install, probably took me about 30 minutes. The instructions say you will require two people, but I live alone, so laid on my back under the deck and used my feet to hold the metal structure in place while I used my hands to hold the drill and screws to attach it to the desk. That worked! It is just right.
Kisermom 
