Trane FAN05668 Fan 321042-401 including the 4TWR

including the 4TWR

it maintains the precise mechanical tolerances needed for reliable cycling in high-frequency environments

ensuring that system pressures equalize before the compressor initiates a new cooling cycle

Housed in a rugged die-cast aluminum enclosure with NEMA Type 4 sealing capability

ensuring correct blade pitch and housing clearance for optimal airflow

Trane FAN05668 Fan 321042-401 including the 4TWRThe Trane FAN05668 Centrifugal Fan is a heavy duty OEM replacement fan engineered for high static pressure applications within commercial and industrial HVAC systems. Built with a 11 inch diameter impeller, this centrifugal blower is designed to move large air volumes efficiently by converting rotational energy into increased air velocity. Veteran techs know that maintaining precise airflow in Air Handling Units (AHUs) is critical for system balance;