This workstation is very sturdy and it's easy to raise and lower. The only assembly needed is for the keyboard tray.When the station is completely lowered, it does not lock into place. You can raise and lower it approx. 1 inch without using the spring levers. Once I mounted my two monitors, this wasn't really an issue. The weight keeps the desk down in the lowest position.Shipping weight was approx. 50 lbs.