Atlas WB11 Self Calibrating Computer Wheel Balancer Baseplate 2 Post Auto Lifts Overall Height 151 1 2" (12' IRT261 3 Overall Height 151 1 2" (12' 7 1 2") Overall Floor Width 143 3 8" (11' 11 3 8") Outside Column To Outside Column 135 7 8" (11' 3 7 8") Maximum Lift Height (With Adapters) 84" (7') Minimum Pad Height 3 1 2" Inside Column 117 1 2" (9' 9 1 2") Drive Thru 103" (8' 7") Drive Thru 106 1 8" Motor Electrical Requirement 220 Volt The automatic features of this truck tire changer allow the operator to drastically reduce the time it takes to mount and demount a truck tire No Anchor Down Installation The Atlas WB 11 is capable of self diagnosing problems and displays error codes so the operator can make the necessary adjustments or repairs in his own shop