Industrial grade used very little. National Fan Model: NB-12-C-1-T Raptor style axial fan. 1875 CFM. Belt driven by LEESON Model: M6C34FB1C 1/2 HP Phase 1 motor, TEFC (totally enclosed fan cooled). Spark resistant aluminum impellor. Mounted on a fabricated sheet metal wall mount adaptor. Designed to be used with a pyramid type fabricated steel hood I am also selling