Frame Dimensions & Compatibility: This electric adjustable table legs recommended tabletop dimensions: 39.4" to 63.3" in length, 19.6" to 27.6" in width (actual frame length: 36.6" to 52.4", frame height: 28.3" to 47.2" ) Improve Efficiency: This electric standing desk frame is quick and easy to adjust the height and switch sit-stand posture, it is liberates you from unhealthy working habit and enhances your working efficiency Sturdy Structure: The heavy duty steel adjustable desk legs and solid constraction sit to stand desk frame provide 176 lbs/80 kg load capacity; the anti-collision technology helps to avoid damage to the desk or furniture during operation Smart Operation: The standing desk legs feature an intuitive control panel for quick height adjustment with three memory presets to save your favorite height settings Easy to Assemble: The computer desk legs equipped with complete set of tools and parts, complete installation manual included