FOUR WING CONDENSER FAN BLADES CAN BE USED IN AIR CONDITIONING AND HEATING APPLICATIONS. FOUR WING CONDENSER FAN BLADES ARE MADE OF ALUMINUM WITH STEEL SPIDERS FOR LONG LASTING DURABILITY AND STRENGTH. ROTATION IS DETERMINED BY FACING THE DISCHARGE SIDE. AVAILABLE WITH A 1/2 IN. FIXED HUB OR AN INTERCHANGEABLE HUB. A FREE AIR FAN BLADE MODEL AND A HEAVY DUTY MODEL ARE ALSO AVAILABLE. RPMS AND DIMENSIONS VARY.