•4 Blade, Interchangeable Hub, Condenser (Pressure) Type Fan Blade •Blades: 4 •Rotation: Clockwise •Diameter: 18 Inches •Pitch: 27° •0 Inches Static Pressure: CFM = 2490, BHP = 0.12 •30 Inches Static Pressure: CFM = 1510, BHP = 0.18 •Maximum RPM: 1725 •Standard Pack: qty 2 •Typical Applications: Air-Conditioning Condensers, Power Roof Ventilators, Heat Pumps, Heat Exchangers, Unit Heaters, Industrial Equipment