Dual motor / 2 Stage / Enhanced column Material: Commercial grade steel Height Range: 700-1200mm Stroke: 500mm Width Range: 1100-1700mm Speed: 20mm Noise: < 50dB Load Capacity: 100kg / 220lbs Power: 100-230V Anti-collision: Yes New version with holeless column G.W: 27kg / 60lbs Carton Size: 105*25*20.5cm / 41.3*9.8*8.07 inch