Specifications include, but are not limited to: LIFT:( 20,000 lbs.) 1. Complete lift assembly shall consist of an electric over hydraulic lift unit, controls, and any accessories as specified herein. 2. Lifting capacity will be 20,000 lbs. Minimum. 3. Lifting stroke will be 72” minimum. This dimension is measured from the floor to underneath the swing arm when the lift is at full height. Measurement to the top of the swing arm shall not be added to the vertical travel to arrive at lifting stroke. 4. Lifting height will be 77 3/8” minimum. This measurement is measured from the floor to the top of the lifting pad when the lift is at full height and the lifting pad is at its lowest position. 5. Lifting height will be 82 3/8” with 5” truck adaptor, 84 7/8” with 7-1/2” truck adaptor, and 87 3/8” with 10” truck adaptors. 6. A maximum of two 5”, 7-1/2” and 10” truck adaptors can be stacked together in any combination to achieve higher frame lifting points. 7. Steel safety locks, one for each post, shall incorporate a multi-position lock that employs a spring-applied air cylinder released cam and latching rack. The lock release control will disengage all locking cams in each leg. Locks shall start locking at a minimum of four (4) inches off the floor. The mechanical locks in each column will engage every six (6) inches thereafter to full lifting height. 8. Each lock body will be made of 1-1/2” thick, a-36 grade steel measuring 7-1/4”x 9-1/2”. 9. Each individual locking device shall be capable of supporting the entire load of the lifting leg. 10. Each locking mechanism shall be mechanically operated and shall normally be engaged in a locked position. 11. Two mechanical locks are located in each post. The locks will be spring engaged and pneumatically released with (2) cylinders per column activating each lock. 12. Lifting speed will be 90 seconds minimum from the floor to full height. 13. Lifting arms will accommodate cars through medium sized trucks weighing up to 20,000 lbs. 14. Closed reach of 37” and an open reach of 62-1/8”. All four lifting arms will be equal in length to safely support front wheel drive vehicles as well as heavy ended vehicles with dual rear wheels, lift gates, dump body and utility bodies. Asymmetrical arms or rotated columns are not acceptable. 15. Lifting arms will be equipped with arm restraints that operate automatically. Manually operated arm restraints are not acceptable.