Ready-to-install (19" W x 7U) 16-ga steel panel with one mounted10” (dia) x 3.5"(D) tubeaxial fan and front/rear guards. Powerful turbo-style fan with feathered edges for lower noise features 550cfm airflow rating and low 50.8dBA noise rating. Operates on 115Vac 50/60 Hz (operating temperature range: -30 to +60C). Assembly includes either standard 6ft cord (black) or thermo-cord (green) which has an integral thermostat to control fan operation. Thermostat automatically turns fans on when ambient temperature hits 86 F (30 C) and off when the temperature is 72 F (22 C). This power-saving feature ensures efficient operation, while saving wear and tear on fan.