Ergo Elements Manual Hand Crank Base, White Adjustable Height Standing Desk Base accommodates MAX desktop size: 84" (length) x 36" (wide) Base accommodate 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) Manual hand crank handle: Hand crank is removable which allows for optimal usable front work area. Base Only - Desk top Not Included.