PORTABLE BLOWER VENTILATOR FANS 8 Inch Diameter Fan Exhaust fans help ventilate and cool manholes, tanks and crawl spaces. Made using durable steel housing with a yellow finish. These two-speed blowers are lightweight and portable with an easy-carry handle. Powder coated steel blade guards enclose housing for safety. Rubber feet on base help minimize noise and reduce vibrations. The working ambient temperature range of this model is 0 - 40 degrees Celsius (32 - 104 degrees Fahrenheit). Includes 10'L power cord. 120V. 1 Year Limited Warranty. Horsepower rating based upon maximum speed/load.