' Vacuum Drum, Head Type Open Head, Volume Capacity 55 gal., Material Steel, Gauge 18, Color Black, Includes Drain Valve, Inside Dia. 22-1/4 In., Overall Height 36-1/2 In., Outside Dia. 23-1/2 In., Material Thickness 0.048 In., Bung Hole Dia. 2 In. NPT, Interior Coating Food Grade Epoxy, Gasket Material Rubber, Weight 50 lb., For Use With Air Vacuum Heads '