12mm bore of 20-Inch Replacement Fan Blades ensures precise alignment with compatible fan motors, restoring optimal airflow efficiency once installed. 20-Inch Replacement Fan Blades are crafted from thickened aluminum alloy, boasting a sturdy build that minimizes vibration during fan operation for stable performance. Side screw-fixed Pedestal Fan 20 Inch blades feature a simple installation process: align with the axle notch and tighten screws to complete replacement in minutes. design of Pedestal Fan 20 Inch blades fits multiple fan types including industrial crawl fans, making it easy to replace old or damaged parts. Thickened aluminum construction of Replacement Fan Blades ensures long-lasting durability, resisting bending and wear even in frequent-use settings.