This Varidesk Cube Corner 36 sit stand desk riser has a spring assisted lift mechanism that will let you rise and lower almost effortlessly. It has 8 different height settings and a 35 pound weight capacity. It can be lowered down to 4.5 inches and can be raised up to 17.5 inches. It measures 36Wx33Dx4.5/17.5H and is in excellent condition.