Marketing InformationThese ProTech® replacement blades for fans represent the most popular, widespread axial impeller used in North America. These CCW replaceable OEM fan blades are highly configurable to meet a variety of project needs and are made from galvanized steel and aluminum to ensure durability for long term use of the heating, venting and air conditioning systems. Typical applications for an HVAC fan blade part include AC units, heat pumps, HVAC ventilation, pool heaters and more.