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Revcor R21804 is an 18-inch aluminum two-blade fixed hub fan blade with a 1/2-inch bore, 29° pitch, and clockwise (CW) rotation. The intake-hub propeller functions as a replacement for Mars 40307 and is intended for HVAC motor and fan applications requiring axial airflow. The fixed hub transfers motor torque directly to the blades for consistent rotation and balanced operation.
18 in aluminum fan blade, 2 blades, fixed hub, 1/2 in bore, 29° pitch, clockwise rotation
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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