Air Amplifier Amplification Ratio 18 Inlet Size 1/4 in Air Inlet Type NPT Inlet Diameter 1 1/2 in Discharge Dia 1 1/4 in Maximum Sound Level 72 dBA Body Material Aluminum Air Consumption 8.1 scfm Air Output Volume @ 80 psi 146 scfm Output Type High Efficiency Fixed Includes Filter Separator Not Applicable Includes Pressure Regulator Not Applicable Includes Shims Not Applicable Mounting Hole Diameter 1/4 in Number of Mounting Holes 2 System of Measurement Inch