ZT Series 36 x 24 Electric Desk Converter [OPEN BOX]OPEN BOX NEW all hardware and parts are included May contain minor cosmetic blemishes . Manufacture warranty applies Transitions from sitting to standing with a push of a button. Electric motor raises or lowers the riser at a speed of 1 per second. The riser adds 5. 7 to 18. 1 to your existing work surface. The base is made of steel and is sturdy even at the highest position. Upper surface size is 36 x 24" and is large enough for two screens. Lower