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

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 $49.99
Price when purchased online
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  • Free 90-day returns
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Customer ratings & reviews

4.3 out of 5 stars
stars501 ratings290 reviews
How item rating is calculated
  1. 5 stars72% (360)
  2. 4 stars10% (48)
  3. 3 stars5% (24)
  4. 2 stars2% (10)
  5. 1 star12% (59)

Reviews summary

Pros

  • : Has three speed settings for adjustable power.
  • : Fits stably in window for outdoor use.
  • : Suitable for high-temperature conditions.
  • : Fits snugly on various window frames.
  • : Offers good value at this cost.

Neutral

  • : Can be quiet, but also loud on higher settings.
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Showing 1-3 of 290 reviews

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
Jul 11, 2010
Hawk8159
Walmart Associate
5 out of 5 stars review

very nice box fan

i rather use this box fan than the galaxy box fan. that fan shakes when running and makes more noise. where this one does not shake and it's not so noisy. 3 different speeds controlled by a nob at the top. puts out a lot of air but not as much as the Lasko 20 inch pivoting floor fan. all 3 fans are 20 inch floor fans. it's also energy efficient.

Helpful?37D1A429U1HU9204066
Apr 28, 2020
toby
5 out of 5 stars review

Verified Purchase

Highly Duable, Tad Pricy

Best Fan to have even when the weather isn't sunny and hot. Shielded motor keeps the air moving and turning it around to blow the air out of the house is just as helpful as bringing it in. We use it in the bedroom window when the temp is in that 50-75 range and the humidity is low. Had three before and just now replaced the last one.

Helpful?37D1A429U1HU9204066