· Active Workstation Legs: Designed for DIY tables, this ergonomic standing desk frame gives you the height adjustment you want with customization options (table top must be purchased separately)· Compatibility: Recommended Tabletop Sizes - Length of 37” to 80”, Width of 23” to 43”, and a thickness of 3/4” and greater (Actual Frame Length: 36.8” to 59.7”, Frame Height: 27.6” to 45.7”)· Solid 154 lbs Support: All-steel construction and a sturdy 2-part column support system hold weights up to 154 lbs, so you can rest easy knowing that your workstation is safe and secure. Leveling feet adapt to nearly any floor surface· Electric Lift System: Strong, 2-piece telescopic legs create precise height adjustment, allowing you to go from sitting to standing in seconds. The powerful single motor features 0.8” per second lift speed· 2-Button Controller: This simple controller is easy-to-use so you can quickly find your desired height setting