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The MESTEK j34r06999-112 is a replacement fan blade propeller designed for use in STERLING-branded XF Series commercial heating units. This component moves air across the heat exchanger to maintain proper airflow and thermal performance within the unit. It is a direct replacement part for units rated at 200K, 250K, and 400K BTU/h output ranges. Installation is typically performed by a licensed HVAC technician as part of routine maintenance or component failure service on commercial heating equipment.
This fan blade propeller is used in STERLING XF Series commercial heating units across the 200K, 250K, and 400K BTU/h capacity range. These units are commonly found in commercial and industrial spaces such as warehouses, manufacturing facilities, and large retail environments where high-capacity forced-air heating is required. The propeller mounts to the fan motor shaft and is critical to maintaining rated airflow and heating performance.
Designed as a replacement fan blade propeller for STERLING XF Series heating units rated at 200K, 250K, and 400K BTU/h.
Installation should be performed by a licensed HVAC technician. Disconnect all power to the unit before removing or installing the fan blade propeller. Ensure the motor shaft and hub are clean and free of debris before mounting the new propeller. Verify blade orientation and hub seating before restoring power and testing the unit.
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