Quote:
Originally Posted by Ro`bear
Bottom stackers seem more efficient to me, but the biggest drawback is that they can't help with cooperation as easily. Most designs for bottom stackers can't really accommodate for picking up totes from the step, and would also have difficulty placing on the step.
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Not necessarily. A design that picks up totes from any part of the lip could easily interact with totes on the step and still lift entire stacks.