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

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

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.

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

Search

Customer Questions & Answers

4 Questions4 Answers

Customer Questions & Answers

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

Ask your questions. Share your answers.

 
 
Clear Search Term
 
 
Sort By:
 
2 answers

Can this be wall-mounted?

This question is from 20 in. 3-Speed Weather Shield Performance Box Fan
Asked by
Read all my Q&A
June 27, 2015
I am looking to mount it at a downward angle.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (2)

Asked by
NYC
Read all my Q&A
Home Improvement Profile: DIYer
July 6, 2016
Answer: 
Not at all easily. This fan has no mounting holes, brackets, or other hardware, it's intended to sit on a flat surface like the floor or a windowsill. Not to mention that it would not work properly without significant clearance in the back (where it's pulling air from). Monting it within a few inches of a wall would put a heavy strain on the motor and greatly reduce the airflow. And since the controls Read More
Not at all easily. This fan has no mounting holes, brackets, or other hardware, it's intended to sit on a flat surface like the floor or a windowsill. Not to mention that it would not work properly without significant clearance in the back (where it's pulling air from). Monting it within a few inches of a wall would put a heavy strain on the motor and greatly reduce the airflow. And since the controls are on top of the fan, I really can't imagine how you'd control it, unless you just set it to one speed and then used an extension cord with a remote switch or something like that.
I don't mean this in a rude way but, basically, "if you have to ask", you probably won't want to try. It would be more than a minor "project" even for someone with some DIY experience and a degree of McGyver-esque ingenuity.
I don't know if Home Depot carries them, but fan manufacturers do make wall-mountable, oscillating fans. They're (obviously?) quite a bit more expensive than this item, but their design makes that more or less a given. It sounds like one of those would be your best bet. Read Less
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Seattle
Read all my Q&A
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.
-1point
0out of 1found this answer helpful.
Was this helpful?helpful0unhelpful1
 
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
Read all my Q&A
June 9, 2015
I need the wattage, voltage, and amps.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answer (1)

Asked by
Seattle
Read all my Q&A
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.
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0
 
1 answer

CFM?

This question is from 20 in. 3-Speed Weather Shield Performance Box Fan
Asked by
NJ
Read all my Q&A
May 11, 2015
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

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
+5points
6out of 7found this answer helpful.
Was this helpful?helpful6unhelpful1
 
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
Read all my Q&A
May 15, 2016
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0
1 of 1
  • 2016-07-25 T21:21:02.904-05:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_203749141, prod, sort_default
1 of 1
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 256ms
  • QUESTIONS, PRODUCT

Customer Reviews

Rated 4.4 out of 5 by 41 reviewers.
Rated 5.0 out of 5.0 by Great airflow I use this to circulate air thru my whole house. I put it in my bedroom facing outward and it pulls air in from across the house. Love it. May 31, 2016
Rated 3.0 out of 5.0 by Ok Not as powerful as I expected but good for the price. July 19, 2016
Rated 2.0 out of 5.0 by Loud Fan. This fan is loud. Not best for use as a bedroom fan. Would not buy again. June 28, 2016
Rated 4.0 out of 5.0 by ok but somewhat noisy Fan has a protective cover and the price was reasonable. However, even at the lowest setting, it is somewhat noisy. Does keep me cool, though. July 19, 2016
Rated 4.0 out of 5.0 by Great Purchase What can I say? It works great. Our A/C unit went out and have been using this fan till our A/C unit got fixed June 19, 2016
Rated 5.0 out of 5.0 by Great fan I bought one about four years ago and it's still running well as if it were new. That's what made me buy another one. I hope this one will be as good and last as long. June 28, 2016
Rated 5.0 out of 5.0 by Lasko Fan Powerful fan helps exhaust hot air to the outside, reducing a/c costs. June 14, 2016
Rated 5.0 out of 5.0 by Outstanding Purchase! We are delighted with our fan. It's amazing how much more comfortable our rooms are now as we come into the hot weather. The price was very reasonable, and the fan arrived the day after we ordered it. We could not be happier. Thank you! June 23, 2016
  • 2016-07-24 T20:31:54.216-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_41, tr_41
  • loc_en_US, sid_203749141, prod, sort_default
2 3 >>
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 40ms
  • REVIEWS, PRODUCT