Frame Dimensions and Compatibility - Frame Length: 39" to 61.5", Frame Height: 29" to 48". Recommended table top measurements: Length of 40" to 80", Width of 24" to 32", and a Thickness of 3/4" and greater. Hand Crank System - Simple crank system using minimal effort to adjust to your desired sitting and standing height. Telescopic Height Adjustment - The strong legs use telescopic adjustment transitioning from sitting to standing in no time. Sturdy 154 lbs Support - All steel construction and a thick leg support system hold weights up to 154 lbs. We’ve Got You Covered - Sturdy design is backed with a 3 Year Manufacturer Warranty and friendly tech support to help with any questions or concerns.