Replacement Propeller, Propeller Dia 18 In, Bore Dia 1/2 In, CFM @ 0.000-In. SP 2863, @ 0.300-In. SP 1565, Min HP 1/6, Max RPM 1140, Pitch 29 Deg, Clockwise Rotation, Number of Blades 2, Propeller Material Aluminum, For Use With Air Conditioning Condensers, Heat Pumps, Heat Exchangers and Unit Heaters A/C Condenser Replacement PropellersFor use with A/C condensers, heat pumps, heat exchangers, unit heaters, and power roof ventilators. OEM replacements for the aftermarket. For replacement condenser fan motors, see pages 70, 72, and 63.Rotation facing discharge Embossed aluminum blades and spiders for strength and rigidity Hub-type propellers have 1/2" bore and include set screws (hub on intake side) Hubless propellers require interchangeable hex hubs (sold separately, this page) For low static pressure applications