Drum-Top Vacuum Head Vacuum Power Source Pneumatic Number of Power Heads 1 Vacuum Pickup Type Wet/Dry Vacuum Filtration Type Standard For Drum Capacity 55 gal Vacuum Air Flow 89 cfm Static Pressure 185 in Sound Level 102 dB Vacuum Hose Dia 1 1/2 in Minimum Air Compressor 15 hp Air Hose Dia 3/4 in Inlet Air Flow 68 cfm Inlet Air Pressure 100 psi Inlet Connection Gender Female Air Inlet 1/2 in FNPT Inlet Connection Type Threaded Includes 55 gal Vacuum Generating Head