All Star Regenerative Air Blowers; Inlet Size: 2.5; Outlet Size: 2.5; Horse Power: 8.50; Amperage Rating: 28.6000; Cubic Feet Per Minute: 400 SCFM; Height (Inch): 26; Width (Decimal Inch): 22; Maximum Working Water Pressure: 116.00; Maximum Vacuum Water Pressure: 120.00; Overall Length: 23.00; Phase: 3-