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Lasko 20" Weather-Shield Performance 3-Speed Box Fan, 2000 CFM, White, 3720

4.3 stars out of 489 reviews
(4.3)|
489 ratings
Lasko 20" Weather-Shield Performance 3-Speed Box Fan, 2000 CFM, White, 3720Lasko 20 Weather Shield Performance Box Fan with 3 Speeds 3720 White 22 5 High New3 pack Lasko 20 Weather Shield Performance Box Fan with 3 Speeds 3720 White 22 5 High New
Pack Size:Single

Key item features

  • Features a 20-inch box fan design for powerful airflow in any room
  • Offers 3 refreshing speed settings to customize your cooling needs
  • Boasts Save-Smart energy efficiency, costing less than 2¢ per hour to operate
  • Equipped with a patented Weather Shield motor for worry-free window use
  • Includes a high-performance grille for ultimate airflow and cooling
  • Wider fan body structure provides greater stability and durability
  • Lightweight design with a convenient carry handle for easy portability
  • Equipped with Lasko's trusted, fused safety plug for added peace of mind
  • Use in conjunction with air conditioning to help circulate cool air throughout your space
  • Perfect for the bedroom, living room, home office, the garage and more
Current price is $41.99
Price when purchased online
  • Free shipping
  • Free 90-day returns
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4.5217594759007955 stars out of 5, based on 2137 seller reviews(4.5)
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About this item

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Customer ratings & reviews

4.3 out of 5 stars
stars489 ratings289 reviews
How item rating is calculated
  1. 5 stars72% (351)
  2. 4 stars10% (49)
  3. 3 stars5% (23)
  4. 2 stars2% (9)
  5. 1 star12% (57)

Reviews summary

Pros
  • : Has three speed settings for adjustable power.
  • : Fits stably in window for outdoor use.
  • : Has an attractive and sleek design.
  • : Offers good value at this cost.
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Showing 1-3 of 289 reviews

Feb 6, 2026
Layal
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Practical fan

This 20” weather-shield performance 3-speed box fan (2000 CFM) in the white color from Lasko is a great device and option if you're looking to have a cool ambiance on a hot day! It's effective and practical to use and set up on 3 different modes. It's affordable and definitely recommended.

Helpful?37D1A429U1HU9204066
Jan 22, 2026
Stacy
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Excellent window fan

10/10 fan Very powerful It arrived pretty fast I recently purchased the window lasko window fan to help cool down my Bedroom/Living Room and overall, I'm very satisfied. It does its job I recommend it

Helpful?37D1A429U1HU9204066
Aug 29, 2020
Steve
5 out of 5 stars review

Verified Purchase

Little Fan With Big Wind

This little box fan puts out a lot of wind for the size of it. You need to make sure you attach the two included "feet" that braces it since on high it could easily blow itself over backwards. I like the fact that it's meant for indoor/outdoor use since it's so wet and humid in Florida in the summer.

Helpful?37D1A429U1HU9204066

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