Edge of Dock Leveler Dock Leveler Lift Mechanism Mechanical Spring Counterbalance 20 000 lb Load Capacity Service Height Range 3 in Above or Below Dock Overall Width 88 in Usable Width 66 in Bumper Size 13 in x 5 in x 10 in Motor HP Not Applicable Includes Handle Open Depth 29 3/4 in Closed Depth 17 in