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Lasko

Lasko Air Circulating Box Fan 3733, White

  • Based on 1,193 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Sep 7
Order within 15 hours and 15 minutes
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Features

  • Built-in carry handle Save-Smart
  • less than 2 per hour to operate
  • 2-year limited warranty
  • 3 quiet speeds
  • The Blue Plug Patented safety fuse technology

Description

Lasko Air Circulating Box Fan 3733, White

Brand: Lasko


Color: White


Electric fan design: Window Fan


Power Source: Corded Electric


Style: Classic


Product Dimensions: 4.25"D x 20.5"W x 21.75"H


Room Type: Bedroom


Special Feature: Lightweight


Recommended Uses For Product: Indoor


Mounting Type: Window Mount


Power Source: Corded Electric


Room Type: Bedroom


Special Features: Lightweight


Recommended Uses For Product: Indoor


Mounting Type: Window Mount


Controller Type: Manual controls


Number of Speeds: 3


Wattage: 70 watts


Number of Blades: 5


Speed: 3 rpm


Voltage: 70 volts


Switch Type: Push Button


Indoor Outdoor Usage: Indoor


Control Method: App


Standby Power Shutoff: energy-efficient


Number of Power Levels: 3


Main Power Connector Type: NEMA 5-15


Installation Type: Window Mount


Material: Plastic


Blade Material: Plastic


Specification Met: ETL


Color: White


Electric Fan Design: Window Fan


Style: Classic


Finish Type: Painted


Collection Name: Indoor Fans


Item Dimensions D x W x H: 4.25"D x 20.5"W x 21.75"H


Blade Length: 20 inches


Item Weight: 3.2 pounds


Size: No Size


Brand Name: Lasko


Included Components: Cord


Model Name: Air Circulating Box Fan


Model Number: 3733


Manufacturer: Lasko Products


Warranty Description: Warrranty


UPC: 046013311900 012304161165


Number of Packs: 1


Unit Count: 1 Count


Item Type Name: 20 INCH BOX FAN


Part Number: 3733


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Affirm Financing
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  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • A good buy is more than just the money up front.
While it's somewhat smaller and lighter than their previous box fans, it works very well and has more power than Lasko's previous box fan models ... so much that the rear "feet" need silicone grippers, or the suction skates it backwards. It comes in a Home Depot box, so why not buy direct? Here's why: the third-party seller gets it to you super fast (instead of the usual 3 - 4 wks. a direct order would take for delivery). Secondly, Amazon offers insurance on their appliance sales, and this is so important even for box fans. About 8 yrs. ago, I bought nine (9) large multifunctional fans, which are easily twice as expensive as box fans. Six of them were gifts, and I kept the other three. Eight of these fans died in under two years, five of them dying in the very first year! The ninth one that lived was one of mine and it lived about 8 yrs. All of these purchases were uninsured, so I was both out of pocket and humiliated by malfunctioning gifts. A one out of nine survival rate is a very poor ratio and hardly recommends a purchase, but when they work, their fans are really great (and their box fans usually work well). So you see, insurance is a vital necessity now. You can't protect your purchases without it. ... show more
Reviewed in the United States on March 16, 2022 by KC Myers
    • strong airflow at a suprising price!
Review Image by Zhaobang Hou
Powerful, strong airflow at a suprising price!
Reviewed in the United States on August 13, 2026 by Zhaobang Hou
    • This fan works multipurpose as a exhaust in your windowif you have a small apartment
The fan is not noisy but it is a fan so you will hear it blowing it is lightweight and sturdy I bought this fan in October 2021 and it hasn't been a whole year yet we are now in the end of June 2022 and it still works fine. It also is easy to clean you just remove the screws from the screen and get a scrub brush with soap and water or some type of multi-purpose cleaner and the dirt comes off easily the fan blades itself white clean easily I don't recommend trying to remove the fan blades from the mechanism just wipe the blades off and then that should be good enough and then replace the screens with the screws and you'll have clean fresh air instead of doing a lot of dust that is a great product and I'm happy that I invested in it and it saves money too. It sits easily in a window if you have an apartment like me and a small apartment at that and you're cooking definitely helps as exhaust as well ... show more
Reviewed in the United States on June 22, 2022 by Jujulimitless
    • Window fan
Used in window to cool off apartment. It worked well it was a little noisy and difficult to clean, but it served the purpose of moving the air around the apartment if you’re in a pinch and you don’t have air-conditioning.
Reviewed in the United States on August 12, 2025 by Kris Morelli
    • I'm a big fan of fans
Other than 480V 3 phase 50 HP ones, right down the street on Lincoln St in West Chester is Lasko. I had my first 20 inch box fan for 19 years. I'd use it for summers and put it away. Then I used it all year long with a 20X20X2 inch filter on a timer from 4am to 8pm. I did a blow out the motor and reoil twice a year. Yes folks. I know HVAC. One day it (the motor) gave up the farm. No smoke. No fire. No smell. I'm waiting for Amazon to ship me the new version. Guaranteed gang. $31bucks. This moves the air without the expensive remote controlled crap. Satellite says: Buy it once.....buy it for life, * ... show more
Reviewed in the United States on July 21, 2021 by Steve Johnson
    • "The Salt of the Earth" of Fans
You're here because you're looking for a Box Fan that is exactly like what you expect out of every box fan you've had in your life and this box fan is it. 3 power settings: Deafening, Loud, and Inconsequential. 2 of them move so much air that you can't point the fan directly at you or you'll get cold. This thing moves air and doesn't make any drama about it. ... show more
Reviewed in the United States on May 7, 2022 by Nathan
    • Still Going
I’ve Had This Thing For Like 3 Years… still going strong. Valuable. Use it every night. Clean with warm wash cloth and swiffer duster once it’s turned off. Love it. It’s great.
Reviewed in the United States on October 16, 2024 by Nicole M. Sholl
    • Great for sleeping!
Just like what everyone said about it in earlier reviews! Works great - level #1 is quiet for sleeping and having fan on at night in bedroom. The higher levels are too noisy for me- but level #1 is Keeping me cool and comfortable for sleeping on these warm summer nights
Reviewed in the United States on August 1, 2021 by M

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