TPI PORTABLE BLOWER FANS 42" Belt Drive - Standard Base This TPI industrial fan features permanently lubricated ball bearing type motors. Blower fans have corrosion and dent proof high density polyethylene housing. Includes spiral wire safety guards, 4 aluminum blades and 2-speed, 1-phase motor. Features rocker power switch and 8'L SJT 3-conductor cord. This portable fan includes 7" rubber wheels and a pull handle on the housing. Meets OSHA standards. UL listed. 1 Year Limited Warranty. Horsepower rating based upon maximum speed/load.