0046013418807

Lasko

Model # 3720

Internet # 203749141

Store SKU # 400327

20 in. 3-Speed Weather Shield Performance Box Fan

$24.98 /each
  • Weather-Shield design is safe to use in windows
  • Three speeds deliver quiet performance
  • Unique grill enables high-velocity airflow

FREQUENTLY BOUGHT TOGETHER

PRODUCT OVERVIEW

Model # 3720

Internet # 203749141

Store SKU # 400327

Step up to Lasko's 3-Speed Weather Shield Performance Box Fan and enjoy the benefits of the Wind Ring system, featuring an exclusive grill design that focuses the air movement to increase its velocity. This high-performance fan runs on three quiet speeds and includes the exclusive Weather-Shield motor, making it safe to use in windows. Lightweight and easy to carry, it costs just two cents an hour to operate, helping you save on energy costs without sacrificing power.

  • Patented, isolated Weather-Shield motor for worry-free window use
  • Three quiet speeds won't disrupt the room or surrounding area
  • Top-mounted controls make it easy to operate
  • Easy-carry handle for portability
  • High-performance grill is uniquely designed for ultimate airflow
  • Save-Smart design costs less than two cents per hour to run
  • Wide body provides floor stability despite its lightweight frame
  • Patented, fused safety plug ensures worry-free operation
  • 2-year limited warranty
  • ETL listed for safety

Info & Guides

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SPECIFICATIONS

Dimensions
Assembled Depth (in.) 
21.5 in 
Assembled Height (in.) 
4.5 in 
Assembled Width (in.) 
22 in 
Fan diameter (in.) 
20 
Product Depth (in.) 
21.5 
Product Height (in.) 
4.5 
Product Width (in.) 
22 
Details
Assembly Required 
No 
Color Family 
White 
Cord Length (ft.) 
Fan Type 
Box Fan 
Grounded 
No 
Housing Material 
Plastic 
Indoor/Outdoor 
Indoor 
Ionizing 
No 
Mounting style 
Standalone 
Number of Fan Speeds 
Product Weight (lb.) 
10.10 lb 
Remote Control 
No 
Returnable 
90-Day 
Slip-resistant feet 
No 
Thermostat 
No 
Timer 
No 
Wheels 
No 
Warranty / Certifications
Certifications and Listings 
ETL Listed 
Manufacturer Warranty 
2 year limited 

MORE PRODUCTS WITH THESE FEATURES

Price: $20 - $30
Brand: Lasko
Review Rating: 4 & Up
Assembled Height (in.): 4.5 in
Color Family: White
Indoor/Outdoor: Indoor
Ionizing: No
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4 Questions3 Answers

Customer Questions & Answers

20 in. 3-Speed Weather Shield Performance Box Fan
20 in. 3-Speed Weather Shield Performance Box Fan

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1 answer

Can this be wall-mounted?

This question is from 20 in. 3-Speed Weather Shield Performance Box Fan
Asked by
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June 27, 2015
I am looking to mount it at a downward angle.
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Answer (1)

Asked by
Seattle
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Home Improvement Profile: DIYer
July 3, 2015
Answer: 
You would have to custom mount it with straps or something. The frame is plastic so you can just screw mounts or straps wherever is needed. Be sure you can reach the knobs.
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1 answer

How much energy does it consume?

This question is from 20 in. 3-Speed Weather Shield Performance Box Fan
Asked by
San Antonio, Texas
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June 9, 2015
I need the wattage, voltage, and amps.
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Answer (1)

Asked by
Seattle
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Home Improvement Profile: DIYer
July 3, 2015
Answer: 
You will have to check their website for the specifics. According to the product description -Save-Smart design costs less than 2-cents per hour to run. Doesn't say if that is on low med or high.
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1 answer

CFM?

This question is from 20 in. 3-Speed Weather Shield Performance Box Fan
Asked by
NJ
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May 11, 2015
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Answer (1)

Asked by
Read all my Q&A
Home Improvement Profile: DIYer
November 18, 2015
Answer: 
Per the same Lasko 20 in. 3-speed fan without the weather shield it runs up to 2500 CFM (on fastest speed).
http://www.homedepot.com/p/Lasko-20-in-3-Speed-Box-Fan-3733/100405665
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0 answers

what is the RPM of each variable speed of the fan?

This question is from 20 in. 3-Speed Weather Shield Performance Box Fan
Asked by
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May 15, 2016
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CUSTOMER REVIEWS

Rated 4.4 out of 5 by 32 reviewers.
Rated 5.0 out of 5.0 by Great fan Moves tons of air. I will recommend this product anytime. April 19, 2016
Rated 3.0 out of 5.0 by Work great at first, do not last We loved this fan for the first year we had it. It worked great, great air flow and fairly quiet, nice looks and design. The second year, it was still good but seemed to get getting a little "tired". Now, in year three, it is quickly dying. We're going back to the cheaper ones since you have to replace them anyway. I've had 20" box fans that have lasted up to 30 years....but in the last decade or so, they only seem to last a year or two. Consider them Disposable. April 22, 2016
Rated 3.0 out of 5.0 by Works well but NOISY. I bought one of these last year and liked it so I bought 2 more Mar 2016. These newer ones were so much louder than the one bought last year. I'm really bummed about that cause I hate the noise. I use them with hepa filters as air cleaners so quiet is important. I would recommend these but only if you're OK witht he noise. I will continue looking for a box fan that's quiet. March 23, 2016
Rated 5.0 out of 5.0 by Awesome Fan I bought one of these fans 13 years ago and it's still going, just barely. I noticed the the low speed started bogging up and down, but the # 2 and # 3 speed were still going . It is well worth the money, and Lasko is a brand you can't beat. Home Depot has the lowest price for this fan, heck eBay couldn't even beat their price :-) February 28, 2016
Rated 5.0 out of 5.0 by Exactly what I wanted. I have a large dog that lives in the house with me. I use this fan as an air purifier. It runs on low in front of a 25" x 25" furnace filter, and runs 24/7. It has been running on low speed constantly since set it up and turned it on. It seems to out perform the older fan I was using even thought the other fan was running on high! February 10, 2016
Rated 5.0 out of 5.0 by Excellent, Durable Fan This window box fan is far and away better than most fans of this type on the market. In the summer, we have our fans running all day and night, in lieu of using the expensive air conditioner. We have at least one fan in each room; in some rooms we have two. It is important to have a product that is sturdy, durable and efficient. These fans last us through at least three, sometimes four, summers. We also run them in some parts of the house during the winter. With the cheaper fans we replace them after a summer and a half. They are more expensive than the fans you buy at certain department stores and other hardware store, but they wind up being more cost effective and reliable than the other. As the other fans wear our, we will replace them with these. September 23, 2015
Rated 4.0 out of 5.0 by Great & Quiet We use as an attic fan and does great. It is quiet also. October 20, 2015
Rated 5.0 out of 5.0 by Lasko Weather Shield Fans are great! We use the Weather Shield fans in the ceiling of our tiger enclosure year round! We have been using these fans for years and they last and last out there. They are technically under cover but still exposed to the humidity and occasional gusts of wind and rain, but we have them running 24/7 throughout the summer months and they are still going now. I only bought these as back-ups in case one of them gives up, but so far, so good! Thanks for making such a reliable product! My tigers appreciate it too! September 23, 2015
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