Aluminum fan blades from Grainger include assemblies with up to 10 blades and bore diameters from hubless to 1-3/16". For lighter, more corrosion-resistant assemblies, install plastic fan blades. Get a replacement propeller to rebuild your air circulator instead of buying a new unit, or buy a spare condenser fan blade to make sure you have all the parts you need to minimize service outages. Grainger has the parts for your ventilation system including aluminum fan blades.