Air Chain Hoist, Heavy Duty, Capacity 4000 Lb, Lift 20 Ft, Lift Speed 0-6 FPM, Min Between Hooks 22 In, Number of Parts of Chain 2, Mechanical Load Brake, Housing Length 18 5/16 In, Housing Width 13 7/16 In, Overall Length 18 5/16 In, Overall Width 13 In, Inlet Size 3/4 In NPT, Air Pressure 90 PSI, Air Consumption 70 SCFM, Pendant Control, 360 Deg Rotating Hook Suspension, Noise Level 97dB, Yellow Enamel Finish, Complies With ANSI B30.16 Standards, Includes Nylon Mesh Chain Container