Ergo Elements Adjustable Height Standing Desk with Electric Programmable Button Base, Grey Controller: Electric controller with programmable height setting (mounts to bottom of tabletop); Base Only - Desk Top Not Included Base accommodates MAX desktop size: 84 (length) x 36 (wide) Base accommodates MIN desktop size: 40 (length) x 25 (wide) Frame size adjustable length: 40 (min length) to 66 (max length) Frame adjustable height: 27 (min height) to 45 (max height)