I just put this here...
http://www.gregsmithequipment.com/Asymmetric-Two-Post-Lifts-Vs-Symmetric-Two-Post-Lifts#asymmetric
In summary the lifting arms are the same length on a symmetrical lift and different lengths on an asymmetric lift. It helps with getting out of wider vehicles.
http://www.gregsmithequipment.com/Shop/2-Post-Lifts
Helped a buddy install one of the 10k Atlas units. Great piece of equipment.
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