Super Sack Unloader system This super sack system is in like new condition. This is an amazing system. This system has a Columbus McKinnon chain fall hoist for lifting the super sacks. THe hoist has left /right and up/down controls. IT also has a twist to close tray bottom. This Super Sack system is all stainless steel construction.This system is 12′ in length x 6′ in depth x 10′ in height. It will accomidate super sacks up to 60 in height. This unit can be raised to accomidate taller super sacks if need be.