THREE WING CONDENSER FAN BLADES CAN BE USED IN AIR CONDITIONING AND HEATING APPLICATIONS. THREE WING CONDENSER FAN BLADES ARE MADE OF ALUMINUM WITH STEEL SPIDERS FOR LONG LASTING DURABILITY AND STRENGTH. RPMS AND BLADE DEPTHS VARY. A FIXED HUB OR AN INTERCHANGEABLE HUB ARE AVAILABLE FOR SALE ADDITIONALLY PLEASE CONTACT A GLOBAL SALES REP FOR MORE INFORMATION . DIMENSIONS AND PITCH VARY.