Lasko Pro Power 20" Box Fan: 3-Speed, Weather-Resistant Motor

The Lasko 20-inch Pro Power Industrial Grade Box Fan moves up to 2,000 CFM of air on high speed, built for demanding spaces. A Wind Ring system adds up to 20% more air velocity, and an upgraded steel body, grills, and motor use over 25% more steel than standard box fans. The patented Weather-Shield motor supports safe window use, and Blue Plug Safety Technology backs its performance.