Air Amplifier Amplification Ratio 25 Inlet Size 1/2 in Air Inlet Type NPT Inlet Diameter 4 15/16 in Discharge Dia 4 in Maximum Sound Level 73 dBA Body Material Aluminum Air Consumption 29.2 scfm Air Output Volume @ 80 psi 730 scfm Output Type High Efficiency Fixed Includes Filter Separator Not Applicable Includes Pressure Regulator Not Applicable Includes Shims Not Applicable Mounting Hole Diameter 1/2 in Number of Mounting Holes 2 System of Measurement Inch