This electric standing desk frame is all steel construction and a sturdy leg support system hold weights up to 330 lbs.Anti-collision technology helps to avoid damage to the desk or furniture during operation.The electric standing desk store 3 custom sitting & standing heights for different users or different use scenarios. Get the right height with a single button press.Our telescopic height adjustment mechanism enables swift transitions from sitting to standing in seconds. 1''/sec speed with lower noise (under 45 dB). Liberate yourself from unhealthy work habits. This electric standing desk frame recommended desktop size: length of 40" to 90" and width of 24" to 44". (Actual frame length: 31.5" to 52.3", Frame height: 28.3" to 47.2" )