Labels:text | electronics | screenshot | font | software | display OCR: BURGER Air Management FAN BLADES : Modern fiberglass / epoxy air movers are state - of - the - art designs that incorporate many aerodynamic improvements that have been made since old style metal blade fans were first introduced . Today's fan blade assemblies are individually factory balanced so that if , after installation, a fan blade must be changed, only one blade can be ordered . With the old cast aluminum type , the entire assembly - including the hub - must be returned to the factory where it is balanced as a unit. 1 Continue 2 Previous 0 Main Menu
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