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20″ Pro Power™ Industrial Grade Box Fan

Model B20548

Enjoy outstanding air circulation with the Lasko Pro Power™ 20-inch Box Fan. This powerful box fan features an innovative Wind Ring® system, that is engineered to provide up to 20% more air velocity. The wider, durable steel body allows for greater stability while the easy-carry handle makes portability a breeze. This fan features durable construction with over 25% more steel than the standard box fans. The patented Weather Shield® motor allows for worry-free window use. This box fan features simple top-mounted manual controls and 3 powerful speeds so you can customize your comfort. This fan is ideal fan for locations where extra durability and performance is needed such as workshops, garages, sheds and more. Use this box fan to circulate air conditioning, dispel stale air and odors, and bring fresh air in. Features Lasko’s trusted, fused safety plug for peace of mind. Comes with Snap-on feet for added stability. Simple assembly required. Comes with a 2-year warranty.


  • 20% More Air Velocity with Wind Ring System
  • Patented Weather Shield® motor for worry free window use
  • Upgraded steel body, grills and motor
  • 3 powerful speeds
  • Simple assembly required
  • 2-year limited warranty
  • E.T.L. listed


  • Size/Height: 4.75"L x 21.5"W x 22.5"H
  • Weight: 10 lbs
  • Remote: No
  • Controls: Simple, manual controls