All Star Regenerative Air Blowers; Inlet Size: 2"; Outlet Size: 2"; Horse Power: 8.50; Amperage Rating: 28.6000; Cubic Feet Per Minute: 230 SCFM; Height (Inch): 22; Width (Decimal Inch): 25; Maximum Working Water Pressure: 217.00; Maximum Vacuum Water Pressure: 171.00; Overall Length: 28.00; Phase: 3-