WHIRLWIND GALVANIZED BOX FANS 36" Direct Drive Fan Heavy-duty 12 gauge wire mesh features hot dipped galvanized finish after welding for rust resistance. 18 gauge galvanized venturi housing encloses efficient 1-speed motor with 3 balanced galvanized steel blades. Enclosed motors include sealed ball bearings with built-in automatic thermal overload protection. Features isolating poly guard clips to help reduce vibration and noise. Mesh screens are removable for easy maintenance. Allows 45 degree mounting for improved air ventilation needs including poultry, dairy and industrial buildings. Includes attached hanging brackets for easy installation. 115V/230V. UL listed. 2 Year Limited Warranty. Horsepower rating based upon maximum speed/load.