AIR CIRCULATOR AND SPECIALTY FANS Non-Oscillating TPI I-Beam Fans I-Beam Fans require 1-1/2" or longer pipe nipple for assembly (not included). These quality fans include an enclosed permanently lubricated, PSC-type ball bearing single-phase motor for long life and optimum performance. 3 quiet aluminum blades are enclosed in double locking chrome plated steel wire guards for safety. Pivot-action fan head allows vertical tilt angle adjustments. 2-speed pull chain operation. 12'L SJT type, 3-conductor power cord. 120V. Easy assembly with pre-assembled fan heads and mounts. Meets OSHA standards, UL listed. Horsepower rating based upon maximum speed/load.