---
product_id: 1183988
title: "Weather-Shield Performance Box Fan, 3 Speeds, Innovative Wind Ring System for Up to 30% More Air, Carry Handle for Bedroom, Office, Home, 20 Inch, White, 3720"
brand: "lasko"
price: "€ 357.28"
currency: EUR
in_stock: true
reviews_count: 8
category: "Lasko"
url: https://www.desertcart.hr/products/1183988-weather-shield-performance-box-fan-3-speeds-innovative-wind-ring
store_origin: HR
region: Croatia
---

# under $0.02/hr energy cost 30% more airflow 3 whisper-quiet speeds Weather-Shield Performance Box Fan, 3 Speeds, Innovative Wind Ring System for Up to 30% More Air, Carry Handle for Bedroom, Office, Home, 20 Inch, White, 3720

**Brand:** lasko
**Price:** € 357.28
**Availability:** ✅ In Stock

## Summary

> 💨 Stay cool, save smart, and breeze through your day with Lasko’s Weather-Shield box fan!

## Quick Answers

- **What is this?** Weather-Shield Performance Box Fan, 3 Speeds, Innovative Wind Ring System for Up to 30% More Air, Carry Handle for Bedroom, Office, Home, 20 Inch, White, 3720 by lasko
- **How much does it cost?** € 357.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1183988-weather-shield-performance-box-fan-3-speeds-innovative-wind-ring)

## Best For

- lasko enthusiasts

## Why This Product

- Trusted lasko brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Cool:** No-tools assembly and a built-in carry handle make setup and portability effortless for your dynamic lifestyle.
- • **Breeze Like a Boss:** Innovative Wind Ring system boosts airflow by up to 30%, delivering powerful cooling without extra energy.
- • **Eco-Chic Efficiency:** Save-Smart technology means running costs under $0.02 per hour—cool comfort that’s kind to your wallet and the planet.
- • **Weather-Ready Durability:** Patented Weather-Shield motor lets you confidently place the fan in open windows, rain or shine.
- • **Silent Productivity Partner:** Three whisper-quiet speeds keep your workspace or bedroom cool without disrupting focus or relaxation.

## Overview

The Lasko Weather-Shield Performance Box Fan is a 20-inch, energy-efficient cooling solution featuring a patented Weather-Shield motor for safe window use, an innovative Wind Ring system that increases airflow by up to 30%, and three whisper-quiet speeds. Designed for easy setup and portability, it operates at less than $0.02 per hour, making it perfect for bedrooms, offices, and living spaces seeking powerful yet silent air circulation year-round.

## Description

This high-performing box fan from Lasko features a patented Weather-Shield motor for worry-free window use, plus a high performance grill for ultimate air flow. Three speeds and Save-Smart efficiency make this an ideal fan for any room where you need to increase cooling airflow.Additional features include: Save-Smart efficiency--less than 2¢ per hour to operateInnovative Wind Ring system for up to 30% more air velocity3 quiet speedsBuilt-in carry handleFully assembled

Review: Great value - still going strong after 10 years of use. - We have been using the Lasko 20" Weather Shield fan year round for over 10 years. We placed it on our kitchen window sill, facing out, leaving the screen in place. We use it to exhaust cooking smells, as well as to create a mild breeze through the apartment in the warmer weather. It's strong enough to pull air in through the living room and bedroom windows, and out via the kitchen; creating the effect of cross-ventilation where our layout alone doesn't really provide it. I was shopping for a smaller fan for a relative, and looked this up in my order history. I was astounded to realize that we've had it for over 10 years. Status report after 10 years: 1 - Functionally - works just as well as ever in terms of creating a great air flow, quietness. The only thing that really seems to have worn is the knob to select low-medium-high speed. The switch mechanism is probably wearing out; once in a while I have to switch it between on and off a couple of times while nothing happens, before it actually turns on; and it doesn't really "click" into the different levels. But we're still using it, on a daily basis! 2 - Noise level - Quiet on low, but has a higher noise level on medium and high, as one might expect. This has not changed over the years. I believe that it has some kind of permanently sealed in lubrication; you never have to oil it. 3 - Cosmetically - Maybe a little lacking here because I've not been so diligent about cleaning it every year, and the paint on the frame may be wearing thin in a few spots. But you can unplug the fan, unscrew the front and back grids and give it a pretty good cleaning. As we use it in the kitchen, and in the city, it has greasy deposits on the grid and on the edges of the fan blade, but these do scrub off with a good cleaning. 4 - We left it in the apartment for 4 months during some renovations over 5 years ago, where it was used by the workmen, and expected it to be demolished when we moved back in, but although they used it every day, it was still going strong when we returned! I would definitely purchase this fan again if I needed to. It was a great value.
Review: Quiet 20-inch Box Fan--Excellent - I want a 20-in box fan that, above all, is QUIET. It is to be used either in my bedroom or kitchen window or in my living/dining room, where I sleep and/or watch TV. Thus, low noise is of chief importance. From the information I have been able to find, including at the Lasko website (LaskoProducts dot com slash box-fans) and among consumer reviews, it's impossible to know just how loud any fan is. The Product Features of a similar model, Lasko 20-Inch Premium Box Fan 3-SPEED , includes "innovative Wind Ring air system provides high volume air movement...that focuses the air movement, increasing its velocity...30% more...than most standard box fans." Gambling that there is something to this more than just advertising hype, I figured this would mean that use of the low speed might be satisfactory hopefully most of the time. The model at hand here, the 3720, does not include as much in its description, but the Wind Ring grille looks to be exactly the same. And since I probably would have the fan in a window at least some of the time, I opted for this model having the Weather Shield. The other does not. When I turned the fan on, I was extremely pleased to find that it is indeed (what I subjectively would call) whisper quiet--that is, on the low speed. But even on the low speed, it does indeed push a nice breeze 15 feet across my living room that except on the hottest days is sufficient to keep me comfortable. Now, of course I can hear it, but it is quiet enough that I don't need to turn the TV up any. On the medium speed, I don't really need to turn the TV up, but I might two or three points at times. And on high, yes, it's fairly loud, but no box fan isn't. And even so, it's only about as loud as the low speed of another fan I have. So for my living/dining room purposes, this fan is excellent. :-) In my bedroom, on the upper floor that accumulates quite a bit more heat than the main floor, the head of my bed is only about 3 feet from the window but 5 feet from the TV. In the window I turn the fan so that it is blowing outward. (In another review I crossed somewhere, the person was saying some fans might blow well but don't draw well. I don't see so much logic in that; unless a fan creates or destroys air molecules, it draws exactly as much air as it pushes. I mean, where else could a fan get the air it blows other than from what it draws?) On low, again, the fan is quiet enough not to be an annoyance, but I do consistently turn the TV up a few points. The air it draws is not a stiff, focused column of air, but a soft, diffused movement of air. With my bedroom door open, and the door and window of another bedroom open to air from the cooler side of the house, within 5 minutes the hot air in my bedroom has been expelled and the room feels appreciably cooler and comfortable. In a bedroom I much prefer a soft displacement of hot air with cool rather than a big, hard blow. So here, too, I am very pleased with the quiet and performance. Then, wondering about the other model, the 3723, I ordered it. Side by side with the 3720, the airflows of the 3 speeds are comparable, if not differing only imperceptibly, if not identical; but the 3720 is noticeably quieter, not much, but enough to appreciate. I returned the 3723, my expense. Slim, light; perfectly balanced, no wobble or vibration even on Hi; metal cabinet is an appealing, subdued, neutral shade of slightly greenish gray that blends well. There's nothing not to like about this fan, other than the packaging. The fan is snug in its factory box, with no outer box/packaging and no Styrofoam spacers, bubble wrap, or other protection. I had to send one back due to deformation of the cabinet, but desertcart took care of the return shipping, thank you. The replacement I've received is fine. This model is $10 or $12 more than the other, but for my money, a little bit more quiet is what I'm after and worth the $12. I've already ordered a second and may order a third. Highly recommended.

## Features

- 3 Quiet Speeds - makes this fan ideal for the bedroom, living room, kitchen, or home office. The quiet yet powerful motor provides a cooling breeze throughout the room.
- Save-Smart - means you'll pay less than $0.02 per hour to operate the fan. Combine this with up to 30% more air velocity and you have an energy efficient fan to use year round.
- Weather Shield Motor - allows you to use the fan worry free in an open window. Thanks to the weather shield motor you can leave the fan in place during minor rain.
- Innovative Wind Ring System - is designed to increase air velocity without increasing power consumption. This allows the fan to circulate more air compared to traditional fans.
- Simple No-Tools Assembly - allows you to take the fan out of the box and have it working in seconds. Just clip the stabilizing feet onto the fan, stand up the fan, and it's ready to use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BOCD1Y |
| Air Flow Capacity | 2000 Cubic Feet Per Minute |
| Best Sellers Rank | #45,104 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #234 in Household Fans |
| Blade Length | 20 Inches |
| Brand | Lasko |
| Color | 3720 |
| Control Method | Touch |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,211) |
| Date First Available | August 17, 2005 |
| Efficiency | Energy-efficient; Increased air velocity with minimal power consumption |
| Electric fan design | Floor Fan |
| Finish Type | Painted |
| Form Factor | Stand Alone |
| Global Trade Identification Number | 00460134188072 |
| Included Components | Box fan, User Manual |
| Indoor/Outdoor Usage | Indoor |
| Installation Type | portable |
| Is Cordless? | No |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8.9 pounds |
| Item model number | 3720 |
| Main Power Connector Type | NEMA 5-15 |
| Manufacturer | Lasko |
| Model Name | 20″ Weather-Shield Performance Box Fan |
| Motor Type | Weather-Shield |
| Number of Blades | 5 |
| Number of Power Levels | 3 |
| Power Source | Corded Electric |
| Product Dimensions | 4.7"D x 21.2"W x 22.5"H |
| Recommended Uses For Product | Air Circulation, Cooling |
| Reusability | [LOW] |
| Room Type | Bedroom, Dorm Room, Home Office, Living Room |
| Size | 20 Inch |
| Special Feature | 3 Speeds, Save-smart technology, Weather shield motor |
| Specification Met | ETL |
| Style | Modern |
| Switch Type | Toggle |
| UPC | 809394594160 680808346229 151903081471 808112947615 460134188072 801947291601 713002510445 804904235489 021112347173 021112833737 754633668129 804067308693 046013418807 |
| Voltage | 120 Volts |
| Wattage | 112 watts |

## Product Details

- **Brand:** Lasko
- **Color:** 3720
- **Electric fan design:** Floor Fan
- **Mounting Type:** Stand Alone
- **Power Source:** Corded Electric
- **Product Dimensions:** 4.7"D x 21.2"W x 22.5"H
- **Recommended Uses For Product:** Air Circulation, Cooling
- **Room Type:** Bedroom, Dorm Room, Home Office, Living Room
- **Special Feature:** 3 Speeds, Save-smart technology, Weather shield motor
- **Style:** Modern

## Images

![Weather-Shield Performance Box Fan, 3 Speeds, Innovative Wind Ring System for Up to 30% More Air, Carry Handle for Bedroom, Office, Home, 20 Inch, White, 3720 - Image 1](https://m.media-amazon.com/images/I/71kzO3PsS9L.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: What is the cubic ft of air movement for the fan?**
A: Great question. The approximate CFMs of this unit are as follows -1530/LOW  1920/MED  2220/HIGH

**Q: how many watts does this fan draw?**
A: My watt meter is reading: Watts = 69/Low, 86/Med, 100/High.

**Q: Where does the cable connect on the fan?**
A: back at bottm comes from moter down fram and out nice long cable best fan i ever had i have 2 both run 12 t0 24 hrs a day and have for almost 2 yrs  you will love them they make very very little sound too and great air flow buy buy hope this helps you

**Q: I see it says made in the u.s.a. and in the next section it says made in china. well, which is it?**
A: The description says made in usa with parts from USA and China.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value - still going strong after 10 years of use.
*by K***R on August 1, 2022*

We have been using the Lasko 20" Weather Shield fan year round for over 10 years. We placed it on our kitchen window sill, facing out, leaving the screen in place. We use it to exhaust cooking smells, as well as to create a mild breeze through the apartment in the warmer weather. It's strong enough to pull air in through the living room and bedroom windows, and out via the kitchen; creating the effect of cross-ventilation where our layout alone doesn't really provide it. I was shopping for a smaller fan for a relative, and looked this up in my order history. I was astounded to realize that we've had it for over 10 years. Status report after 10 years: 1 - Functionally - works just as well as ever in terms of creating a great air flow, quietness. The only thing that really seems to have worn is the knob to select low-medium-high speed. The switch mechanism is probably wearing out; once in a while I have to switch it between on and off a couple of times while nothing happens, before it actually turns on; and it doesn't really "click" into the different levels. But we're still using it, on a daily basis! 2 - Noise level - Quiet on low, but has a higher noise level on medium and high, as one might expect. This has not changed over the years. I believe that it has some kind of permanently sealed in lubrication; you never have to oil it. 3 - Cosmetically - Maybe a little lacking here because I've not been so diligent about cleaning it every year, and the paint on the frame may be wearing thin in a few spots. But you can unplug the fan, unscrew the front and back grids and give it a pretty good cleaning. As we use it in the kitchen, and in the city, it has greasy deposits on the grid and on the edges of the fan blade, but these do scrub off with a good cleaning. 4 - We left it in the apartment for 4 months during some renovations over 5 years ago, where it was used by the workmen, and expected it to be demolished when we moved back in, but although they used it every day, it was still going strong when we returned! I would definitely purchase this fan again if I needed to. It was a great value.

### ⭐⭐⭐⭐⭐ Quiet 20-inch Box Fan--Excellent
*by W***J on July 24, 2012*

I want a 20-in box fan that, above all, is QUIET. It is to be used either in my bedroom or kitchen window or in my living/dining room, where I sleep and/or watch TV. Thus, low noise is of chief importance. From the information I have been able to find, including at the Lasko website (LaskoProducts dot com slash box-fans) and among consumer reviews, it's impossible to know just how loud any fan is. The Product Features of a similar model, Lasko 20-Inch Premium Box Fan 3-SPEED , includes "innovative Wind Ring air system provides high volume air movement...that focuses the air movement, increasing its velocity...30% more...than most standard box fans." Gambling that there is something to this more than just advertising hype, I figured this would mean that use of the low speed might be satisfactory hopefully most of the time. The model at hand here, the 3720, does not include as much in its description, but the Wind Ring grille looks to be exactly the same. And since I probably would have the fan in a window at least some of the time, I opted for this model having the Weather Shield. The other does not. When I turned the fan on, I was extremely pleased to find that it is indeed (what I subjectively would call) whisper quiet--that is, on the low speed. But even on the low speed, it does indeed push a nice breeze 15 feet across my living room that except on the hottest days is sufficient to keep me comfortable. Now, of course I can hear it, but it is quiet enough that I don't need to turn the TV up any. On the medium speed, I don't really need to turn the TV up, but I might two or three points at times. And on high, yes, it's fairly loud, but no box fan isn't. And even so, it's only about as loud as the low speed of another fan I have. So for my living/dining room purposes, this fan is excellent. :-) In my bedroom, on the upper floor that accumulates quite a bit more heat than the main floor, the head of my bed is only about 3 feet from the window but 5 feet from the TV. In the window I turn the fan so that it is blowing outward. (In another review I crossed somewhere, the person was saying some fans might blow well but don't draw well. I don't see so much logic in that; unless a fan creates or destroys air molecules, it draws exactly as much air as it pushes. I mean, where else could a fan get the air it blows other than from what it draws?) On low, again, the fan is quiet enough not to be an annoyance, but I do consistently turn the TV up a few points. The air it draws is not a stiff, focused column of air, but a soft, diffused movement of air. With my bedroom door open, and the door and window of another bedroom open to air from the cooler side of the house, within 5 minutes the hot air in my bedroom has been expelled and the room feels appreciably cooler and comfortable. In a bedroom I much prefer a soft displacement of hot air with cool rather than a big, hard blow. So here, too, I am very pleased with the quiet and performance. Then, wondering about the other model, the 3723, I ordered it. Side by side with the 3720, the airflows of the 3 speeds are comparable, if not differing only imperceptibly, if not identical; but the 3720 is noticeably quieter, not much, but enough to appreciate. I returned the 3723, my expense. Slim, light; perfectly balanced, no wobble or vibration even on Hi; metal cabinet is an appealing, subdued, neutral shade of slightly greenish gray that blends well. There's nothing not to like about this fan, other than the packaging. The fan is snug in its factory box, with no outer box/packaging and no Styrofoam spacers, bubble wrap, or other protection. I had to send one back due to deformation of the cabinet, but Amazon took care of the return shipping, thank you. The replacement I've received is fine. This model is $10 or $12 more than the other, but for my money, a little bit more quiet is what I'm after and worth the $12. I've already ordered a second and may order a third. Highly recommended.

### ⭐⭐⭐⭐⭐ Very strong, but very loud.
*by Q***S on November 27, 2024*

pros: - huge airflow ( the lowest setting may be too much for some applications ) - highly durable cons: - very loud - feet seem flimsy I bought this fan because I had an old Lasko fan that lasted almost a decade. As a replacement this fan blows significantly more air. I usually like to have a fan running pointing at me during the night to help keep me cool. But to be honest this may be a little too strong for that purpose. If you are looking for a fan to cycle air in or out of your house, this thing will definitely do that. It seems well built and a durable quality, it also has a metal chases rather than a fully plastic one. Now for the cons: This fan is loud, there's a very audible sound even on the lowest setting, and on the highest setting it's practically a white noise generator. Also the feet that came with it are very difficult to install, and seem very fragile. Like if I accidentally fall into the fan it would definitely break or bend the feet. Luckily the fan seems capable of standing on its own without the feet.

## Frequently Bought Together

- Lasko Weather-Shield Performance Box Fan, 3 Speeds, Innovative Wind Ring System for Up to 30% More Air, Carry Handle for Bedroom, Office, Home, 20 Inch, White, 3720
- BNX TruFilter 20x20x2 Air Filter MERV 13 (4-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10
- The Original Duck Brand Duct Tape, 1-Pack 1.88 Inch x 60 Yard, Silver (394475)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-19*