Feature: Introducing the Caterpillar® fan 14? high velocity drum air circulator – the perfect industrial fan for precise air movement and powerful cooling. This model is designed with a dual ball bearing enclosed motor with 4-speed rotary switch to provide maximum control over air circulation.
Feature: "Ideal for Extra-Large Living Spaces and Open Concepts
Cleans the air every 12 minutes in spaces 460 sq. ft. or once an hour in extra-large spaces up to 2,220 sq. ft. Perfect for allergy and asthma sufferers and those who live in areas with wildfires or poor outdoor air."