... 7/3.3/3.6m Technical Parameters of Drive in Heavy Duty Rack Shelves Pillar(1)Shelves use 80 ... ) Shelves total height is 3100mm, space of holes in pillar is 75mm, adjustable, accumulative error of holes ... material according to the shortest path mobile, access, in order to improve the operational efficiency of freely.5, Simple ... safe and reliable operation, convenient to fix. Drive in Heavy Duty Rack