18" Aluminum Fan Blade 4 Blade CW 33° Pitch – Replaces Revcor R41811 – NBK-20909

NBK-20909 – 18" Aluminum Fan Blade, 4 Blade, Fixed Hub, CW, 33° Pitch – NBK The NBK-20909 Aluminum Fan Blade is a high-quality OEM-equivalent replacement designed for HVAC condenser and air movement applications. Featuring an 18-inch diameter, 4-blade design, fixed hub, and clockwise rotation, this blade is engineered with a 33-degree pitch to deliver efficient airflow and reliable system performance. It is a direct replacement for the widely used Revcor R41811 fan blade. Manufactured to meet or exceed OEM specifications, the NBK-20909 provides precise balance and durability, making it an ideal solution for HVAC technicians servicing condenser units and ventilation equipment. Key Features OEM-Compatible Replacement: Direct replacement for Revcor R41811 Efficient Airflow Design: 33-degree pitch optimized for condenser performance Durable Aluminum Construction: Lightweight, corrosion-resistant design Fixed Hub Configuration: Ensures secure mounting and consistent rotation Specifications SKU: 20909 Category: Fan Blade / HVAC Material: Aluminum Diameter: 18 inches Blade Count: 4 Rotation: Clockwise (CW) Pitch: 33 Degrees Hub Type: Fixed Hub Application: HVAC condenser and air movement systems Equivalent To Revcor: R41811, R41810 Revcor / Grainger: 4C891 Revcor: FB4CR1833 Why Choose the NBK-20909? The NBK-20909 is a trusted aluminum fan blade replacement for HVAC professionals seeking OEM-level compatibility and dependable airflow performance. Its balanced construction and precise pitch help maintain system efficiency and reduce vibration. Installation Tips Verify blade diameter, rotation direction, and pitch match the original fan blade. Disconnect power to the unit before removing or installing fan blades. Ensure the blade is securely mounted and properly aligned on the motor shaft. Check for clearance around the shroud before restoring power. Pairs Well With Condenser Fan Motors, Fan Blade Hub Hardware, Motor Mounting Brackets, HVAC Electrical Components SPECIAL ORDER NOTICE: This is a special order item sourced from NBK. Please allow 1–2 business days for processing prior to shipment.