Aaon R03990 Wheel Refrigerant it features a 1/2" NPT

it features a 1/2" NPT inlet/outlet and is factory-set for a 4

Can the cleanout plug be used for blowdown

maintaining performance from -40°F to 175°F

the CW rotation at the lead end is critical for the centrifugal blower wheel to push air in the correct direction

Aaon R03990 Wheel Refrigerant it features a 1/2" NPTThe Aaon R03990 Inlet Wheel Plenum is a high performance OEM HVAC replacement part engineered to optimize airflow distribution within commercial air handling units. This essential plenum inlet wheel serves as the aerodynamic interface between the system intake and the blower assembly, utilizing advanced geometry to minimize pressure drops and maximize overall HVAC system efficiency. Designed specifically for compatibility with Aaon RN 015 series