TPI Heavy-Duty Air Circulator efficiently moves and cools air in factories, warehouses, institutions, etc. Run efficiently on ball-bearing, totally enclosed motors. Pull-chain switch activates steel hub and spider aluminum blades. 27" dia. base. Yellow powder coat fan guard, post, and base. Base has two wheels for portability. Four blades. 18'L cord with 3-conductor plug. Factory assembled fan head and mount. Meets federal OSHA standards and is UL listed. Five-year limited warranty.