Aerovent Drum Vent for 2 in Bung Body Material Brass Color White For Drum Orientation Vertical For Liquid Type Non-Corrosive Flammables For Plug Size 2 in Includes Flame Arrestor Yes Minimum Opening Pressure 3 psi Overall Height 16 in Overall Width 7 in Pipe Size 2 in Thread Gender Male Thread Type NPS NPT Vent Type Pressure Vacuum Relief Vent Includes Extra Replacement Filter Filter Maximum Opening Pressure 8 psi