Airtap T4 Register Booster Fan Brand New

Brand new I just purchased the wrong size and it costs too much to return. This is a quiet fan system designed for improving wall and floor register airflow from HVAC systems. This is not an air conditioner. Programmable LCD controller with heating and cooling thermostat, and automated fan speeds. Premium aluminum frame with CNC-machined detailing, painted with a matte-white finish. Features stator-blade fans which can deliver strong airflow from high static-pressure ductwork. Fits ONLY 4 x 10 in. Registers | Airflow: 120 CFM | Noise: 18 Dba | Includes Wall Adapter https://acinfinity.com/hvac-home-ventilation/register-booster-fans/airtap-t4-quiet-register-booster-fan-system-white-for-4-x-10-registers/