Our wide Changing Tray is made to fit atop the 45" wide Roh Dresser, Alto Dresser, Ulm Dresser and the Alto Credenza. Smartly designed to attach from the back side, ensuring the fasteners are unseen yet completely secure. When no longer needed, the tray can be easily removed leaving no trace of having been attached. The Alto/Roh Changing Tray allows for a standard changing pad (not included). Ships assembled but requires some light assembly.