Rotary 18,000lbs.-Capacity Two-Post Symmetrical Auto Lift. This surface-mounted, frame-contact vehicle lift features an adjustable overhead from 15 to 16 6" (at 6" increments) and incorporates air-operated locking safety latches, with stackable, three-position adapters that allow technicians to make contact with the vehicle quickly and easily. This standard-height lift features an 89-1/12" rise and requires 13 8" overhead clearance for installation, with a recommended bay size of 12 x 26. The lift operates on 220V 30-amp single-phase electric and also requires air for the safety locks. * Additional Information can be found here: Rotary SPO18 Info. Standard Features: “Double S” column design with single piece construction provides a channel for the bearings to travel in, maximizing the strength of the column and surface contact area of the bearing. Thread up adapters: Comes with (6) additional adapters for an additional 10" of reach. ALI Certified 18,000 lbs. capacity