Description: This product features a cross flow fan impeller made of high-strength aluminum alloy material. The fan blade comes in various sizes such as Φ30*L and Φ43*L, suitable for different applications including air curtain, air conditioner, air purifier, and heater. The fan blade has a specified diameter, wheel length, number of blades, shaft diameter, and usage, making it a versatile choice for various air flow systems.