4 Blade, Interchangeable Hub, Condenser (Pressure) Type Fan BladeBlades: 4Rotation: CounterclockwiseDiameter: 16 InchesPitch: 33°0 Inches Static Pressure: CFM = 2550, BHP = 0.1530 Inches Static Pressure: CFM = 1450, BHP = 0.18Maximum RPM: 1725Typical Applications: Air-Conditioning Condensers, Power Roof Ventilators, Heat Pumps, Heat Exchangers, Unit Heaters, Industrial Equipment