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

Special order item - may require extra time to fulfill and ship. Special order parts are non-returnable.

In stock
SKU: SO-20909
$120.00
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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.