Industrial Grade High-velocity Fan;Reinforced Wire Grille;All Metal Construction;Aluminum Heavy-duty Blade;Industrial-grade high-velocity fan keeps the airflow moving;Powerful 2-speed high-torque motor; reinforced wire grill;Adjustable tilt allows for ceiling to floor ventilation;Measures 23-4/5 by 12-3/5 by 12-1/5 inches; 1-year limited warranty