FeaturesIntake grille is easily removed with two captive thumbnutsWashable aluminum filter1-phase motor powers the statically balanced blowerMotor is thermally protected and cooled by incoming forced airDirect drive induction motor contains permanently lubricated ball bearingsLubricant protects from -20 to 298 deg FRotating components are suspended on neoprene shock mounts3-conductor power cord (5 ft long)The unit is self-supporting with 16 ga steel flanges notched per EIA RS-310-DAn exhaust grille and filter package (catalog number AEXGR275) is required and must be ordered separately