For most of our customers the standard 28" wide by 24" deep work surface of the Kangaroo is sufficient. But those of us who use larger monitors with the adjustable height desk may seem to close to the screen. For those users we supply and extension for the keyboard area of the work surface. These extensions are 28" wide and an additional 8" deep, and are designed to be used in the standing position only. If you need a larger extension, give us a call. The keyboard extension will match the finish of your Kangaroo and require no additional tools to attach. The extension simply clips onto the front edge of the work surface and can be attached and removed in seconds.