---
product_id: 233931026
title: "Air Flex Air Purifier and Room Fan"
brand: "lasko"
price: "NT$11312"
currency: TWD
in_stock: false
reviews_count: 8
url: https://www.desertcart.tw/products/233931026-air-flex-air-purifier-and-room-fan
store_origin: TW
region: Taiwan
---

# MERV10 pleated filter 3-speed airflow control steel body durability Air Flex Air Purifier and Room Fan

**Brand:** lasko
**Price:** NT$11312
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Breathe Better, Live Smarter — Elevate Your Space with Air Flex

## Quick Answers

- **What is this?** Air Flex Air Purifier and Room Fan by lasko
- **How much does it cost?** NT$11312 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/233931026-air-flex-air-purifier-and-room-fan)

## 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

- • **Built to Last:** Robust steel body with weather-shield motor and UV paint for long-term reliability.
- • **Customizable Airflow:** Ergonomic 3-speed knob lets you tailor airflow for any room vibe.
- • **Versatile Room Essential:** Perfect for bedrooms, offices, and man caves—fresh air wherever you need it.
- • **Advanced Air Purification:** Effectively traps pollen, dust, and smoke with a high-quality MERV10 pleated filter.
- • **Effortless Setup & Portability:** 6-foot cord and carrying handle make moving and installing a breeze—no tools needed.

## Overview

The Lasko Air Flex Air Purifier and Room Fan combines a durable steel frame with a powerful 3-speed fan and a MERV10 pleated filter to efficiently remove pollen, dust, and smoke from indoor air. Designed for easy portability and tool-free setup, it fits seamlessly into any room, delivering cleaner air and personalized airflow control for healthier, fresher living and working environments.

## Description

Prioritize your family's well-being by actively eliminating dust, smoke, and pollen allergens with the robust Lasko Air Flex Portable 3-Speed Air Purifier Machine Box Fan. This versatile fan, meticulously designed for spaces like bedrooms, kitchens, man caves, and laundry rooms, transcends the conventional cooling experience—contributing to a cleaner, fresher air quality that directly impacts your family's health and comfort. Elevate the air quality in your home and office effortlessly with the Lasko box fan, featuring three adjustable fan speeds for a customized cooling experience. Beyond its cooling capabilities, this air purifier excels as an effective odor eliminator, making it a ideal fit for any room in the house. The fan's portability allows seamless transitions from your kid's playroom to the garage, providing an extra boost of refreshing airflow wherever needed. With a convenient 6-foot-long cord, this exhaust fan ensures easy access to any room with an outlet, offering flexibility in placement. Transform your favorite hangout spot with the combined cooling and purifying benefits of the Air Flex Portable 3-Speed Air Purifier Machine Box Fan from Lasko, turning every space into a haven of unparalleled comfort and cleaner air. Your family deserves the best, and Lasko delivers with innovation that goes beyond cooling—bringing a breath of fresh air into your home.

Review: It's an Air Filter Not a Normal Fan for Cooling - I own 4 of these now. I have used many different filters in the past 20 years, mostly 3M and Honeywell. The Lasko box fan filter is the most value for your dollar. Before they even made these I use to tape a 20x20 filter onto the back of my original Laskso fan. Pros The design is simple and very easy to change the filter. You can use filters from many different companies so there is a huge secondary market instead of being pigeon holed into using a specific filter designed only for your model. Despite complaints about airflow, depending on the type of filter you are using, it moves a lot of air. I use a MERV 14 filter and leave it on low. No complaints. It's easy and convenient to clean, transport and store. Cons Loud, even when on the low setting. The higher the MERV rating of your filter, the louder it gets. It's not designed for cooling. Unless you remove the filter which defeats the purpose, this is not designed to provide a cooling effect. The airflow is weak and turbulent. You will get breeze from it but this is primarily for being left in corner to constantly clean the air. Conclusion If you're looking for an inexpensive yet very effective way of cleaning the air in your home or office then this is the best value on the market. If you are looking to cool yourself off in the summer consider a regular Lasko fan or just removing the filter temporarily. Suggestions For everyday use and to get the most out of your purchase, use a MERV 14 filter. When cleaning your home or office, to effectively collect all the dust being kicked up, switch out the filter for a MERV 8 or 11 to significantly increase airflow.
Review: Makes a Cheap Filter Solution Actually Look Sleek - I bought this combo box fan with filter tray attachment because I've actually been doing the DIY version for 5+ years. The DIY version isn't really that attractive, but it works to circulate moist basement air and clear out the cat dander. I wanted the nice version to put in my guest room/office. I've included pictures of both the Lasko fan + filter and my DIY fan + filter as comparison. You can see in my cheap version, I had to carve a hole out of the center back of the filter to make way for the plug. I just bought a cheap box fan from Target during all of the back to school sales. The plug helps keep the filter on, but I've seen a lot of people tape the filter to the fan to get it to stay nicely. The most noticeable difference between the Lasko and my DIY is the air throughput. The Lasko on setting 1 still very visibly moves air and feels like a pretty steady breeze. If I want that same feeling on my DIY version, I have to crank it to setting 3. Though the Lasko filter is MERV10 and my DIY version has a MERV14 filter. I assure you, there IS a difference. I will switch to the MERV14 after this fan has had a year of use. I also included a picture of the last time I changed out my MERV14 filter on my DIY solution. That filter actually represents 2 years of use. My box fan is on a timer to run daily from 10am-2pm. So 4 hours a day for 730 days equals out to almost 3,000 hours of runtime. It was pretty filthy. I recommend once a year if you run it as frequently as I do. But many people run theirs all night, so that'd shorten the filter life to more like 6 months. I have 2 long fur cats and frequently keep my windows open rather than use air conditioning. My DIY version has helped tremendously in my basement to cut down stale moist air and cat litterbox smell. People cannot smell my cat boxes even though I only clean them twice a week. My friends who are allergic to cats are 100% fine in my home. I look forward to the nice Lasko version freshening the air in the upstairs of my house too!

## Features

- Cleans Pollen, Dust, and Smoke from the Air in any Room: Effectively purifies the air, removing pollen, dust, and smoke particles, thereby enhancing the overall quality of any room or office space
- Steel Body Construction: Steel body construction enhances stability and durability, while the Weather-Shield motor and UV protected paint ensure tough and reliable performance
- Ergonomic Control Knob: WITH 3 POWERFUL SPEEDS: Utilize the ergonomic control knob with three powerful speeds, ensuring maximum airflow and personalized comfort
- Set Includes: 6 foot cord with dual prong plug-in for easy setup; Voltage: 120 volts; Carrying handle for convenient transport; MERV10 pleated filter included; No tools required for installation
- Air Flex Air Purifier Box Fan: Enjoy fresher and cleaner air with this air purifier box fan; Dimensions (L x W x H): 6.36 x 21.3 x 23.23 inches; Filter dimensions (L x W x H): 20 x 20 x 1 inches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B089P1Z38J |
| Best Sellers Rank | #559,883 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #3,804 in Home Air Purifier Parts & Accessories |
| Brand | Lasko |
| Brand Name | Lasko |
| Color | White |
| Controller Type | Mechanical Knob |
| Customer Reviews | 4.2 out of 5 stars 1,584 Reviews |
| Filter Type | Pleated |
| Global Trade Identification Number | 00046013453013 |
| Included Components | Cord |
| Item Dimensions D x W x H | 6.36"D x 21.3"W x 23.2"H |
| Item Weight | 11 Pounds |
| Manufacturer | Lasko |
| Model Number | FF305 |
| Noise Level | 10 Decibels |
| Power Source | Corded Electric |
| Product Dimensions | 6.36"D x 21.3"W x 23.2"H |
| UPC | 046013453013 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Lasko
- **Color:** White
- **Item Weight:** 11 Pounds
- **Power Source:** Corded Electric
- **Product Dimensions:** 6.36"D x 21.3"W x 23.2"H

## Images

![Air Flex Air Purifier and Room Fan - Image 1](https://m.media-amazon.com/images/I/717GogtR+VL.jpg)
![Air Flex Air Purifier and Room Fan - Image 2](https://m.media-amazon.com/images/I/71WIIzeBe-L.jpg)
![Air Flex Air Purifier and Room Fan - Image 3](https://m.media-amazon.com/images/I/811iK4g9i7L.jpg)
![Air Flex Air Purifier and Room Fan - Image 4](https://m.media-amazon.com/images/I/819LloC8BZL.jpg)
![Air Flex Air Purifier and Room Fan - Image 5](https://m.media-amazon.com/images/I/81KPrx6YmCL.jpg)

## Questions & Answers

**Q: What size filters fit the FF305 fan?**
A: The ACTUAL size of the filter that comes with the unit is 19.5 x 19.5 x .75. So when you try to stuff an actual 20x20x1 into the housing, it doesn't fit-up properly at the bottom, and distorts the plastic housing slightly which exacerbates the problem.  I put in a 3M Filtrete 20x20x1 MERV 11 and it crushes the filter cardstock frame. This is irritating considering the cost of premium filters. The product information should really be specific about this detail.

**Q: Will the motor overheat while using a merv-13 20x20x1? i've experienced overheating in other lasko fans in diy air filter setups using a 1inch filter.**
A: The FF305 was specifically designed to ensure there would not be any motor burn out regardless of what 20x20x1 filter was placed in the unit. That is based on the motor and the filter housing.  Please note though, there would be a reduction in air flow if you went from a MERV 10 to a MERV 13 filter just as you would see an increase in air flow if you went from a MERV 13 to a MERV 10.  Just remember to regularly change whatever filter you choose to use.

**Q: Is t just 110 volts or 110-220v so international buyers can also benefit ?**
A: It is just 110 volts

**Q: Does the filter go on the "back" or "front" ("intake" or "output") side of the fan?**
A: The filter goes in the compartment on the back of the fan, the intake side.  I love these fans. They are invaluable during allergy and wildfire season.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It's an Air Filter Not a Normal Fan for Cooling
*by R***. on November 12, 2023*

I own 4 of these now. I have used many different filters in the past 20 years, mostly 3M and Honeywell. The Lasko box fan filter is the most value for your dollar. Before they even made these I use to tape a 20x20 filter onto the back of my original Laskso fan. Pros The design is simple and very easy to change the filter. You can use filters from many different companies so there is a huge secondary market instead of being pigeon holed into using a specific filter designed only for your model. Despite complaints about airflow, depending on the type of filter you are using, it moves a lot of air. I use a MERV 14 filter and leave it on low. No complaints. It's easy and convenient to clean, transport and store. Cons Loud, even when on the low setting. The higher the MERV rating of your filter, the louder it gets. It's not designed for cooling. Unless you remove the filter which defeats the purpose, this is not designed to provide a cooling effect. The airflow is weak and turbulent. You will get breeze from it but this is primarily for being left in corner to constantly clean the air. Conclusion If you're looking for an inexpensive yet very effective way of cleaning the air in your home or office then this is the best value on the market. If you are looking to cool yourself off in the summer consider a regular Lasko fan or just removing the filter temporarily. Suggestions For everyday use and to get the most out of your purchase, use a MERV 14 filter. When cleaning your home or office, to effectively collect all the dust being kicked up, switch out the filter for a MERV 8 or 11 to significantly increase airflow.

### ⭐⭐⭐⭐⭐ Makes a Cheap Filter Solution Actually Look Sleek
*by S***E on July 12, 2023*

I bought this combo box fan with filter tray attachment because I've actually been doing the DIY version for 5+ years. The DIY version isn't really that attractive, but it works to circulate moist basement air and clear out the cat dander. I wanted the nice version to put in my guest room/office. I've included pictures of both the Lasko fan + filter and my DIY fan + filter as comparison. You can see in my cheap version, I had to carve a hole out of the center back of the filter to make way for the plug. I just bought a cheap box fan from Target during all of the back to school sales. The plug helps keep the filter on, but I've seen a lot of people tape the filter to the fan to get it to stay nicely. The most noticeable difference between the Lasko and my DIY is the air throughput. The Lasko on setting 1 still very visibly moves air and feels like a pretty steady breeze. If I want that same feeling on my DIY version, I have to crank it to setting 3. Though the Lasko filter is MERV10 and my DIY version has a MERV14 filter. I assure you, there IS a difference. I will switch to the MERV14 after this fan has had a year of use. I also included a picture of the last time I changed out my MERV14 filter on my DIY solution. That filter actually represents 2 years of use. My box fan is on a timer to run daily from 10am-2pm. So 4 hours a day for 730 days equals out to almost 3,000 hours of runtime. It was pretty filthy. I recommend once a year if you run it as frequently as I do. But many people run theirs all night, so that'd shorten the filter life to more like 6 months. I have 2 long fur cats and frequently keep my windows open rather than use air conditioning. My DIY version has helped tremendously in my basement to cut down stale moist air and cat litterbox smell. People cannot smell my cat boxes even though I only clean them twice a week. My friends who are allergic to cats are 100% fine in my home. I look forward to the nice Lasko version freshening the air in the upstairs of my house too!

### ⭐⭐⭐⭐ Box fan that economically filters pollen & dust with MERV 8, great for allergy sufferers
*by M***J on September 24, 2021*

Lasko Air Flex 2-in-1 20-inch Box Fan and Air Purifier in One This product fills a niche between ordinary fans and HEPA air purifiers. I wanted something like this for years, since I tried putting a pleated furnace filter on an old Lasko box fan but after a few months of use could smell the motor starting to burn up. Family members are allergic to pollen, so with this fan on cool evenings I can finally open the windows and use this fan to blow in cool, filtered air. I substituted a MERV 8 filter that's enough to filter pollen and still provide decent air flow (enough to still consider it a fan!) The MERV 8 filters ("FPR" 4-5), rated to capture 70 - 84.9% of 3 - 10 Micron particles, were 3 for $10-13 at a local home improvement store. You can't get more economical than that. After 3 years using it 2-3 hrs/day in the summer I'm still satisfied with the air flow (I do vacuum out the filter occasionally using a bagged upright vacuum with a high efficiency dust bag). I recently tried it as an air purifier by putting in a brand new 3M Filtrete MPR 2500 (MERV 14) filter. 3M rates these as removing 77% of 0.3 - 1 Micron particles (compared to HEPA 99.97%), but the air flow is very low. Low enough that it's not really a fan any more; with this filter I can barely feel any air flow 2' from the fan. Lasko says the Air Flex has a Clean Air Delivery Rate (CADR) of 42; they don't specify if this is for pollen, dust or smoke. 42 is very low which is why I can barely feel air moving through with the MERV 14 filter. For comparison a Honewyell HPA-200 has a CADR of 180 for pollen and 200 for tobacco smoke. The HPA-200 is about 2.5 times the price, but it provides a much higher rate of filtered air, though it's pretty useless as a cooling fan since it blows straight up. I also tried the MERV 10 filter that came with the Air Flex. I think the air flow is a little better with the MERV 8, and the price is definitely better. For reference, here are filter efficiency specs from several internet sites: _____ MERV ___Micron particle size _______#_____ 0.3-1____1-3_____3-10 MERV _8_____ <20%___<20%___70-85% MERV 10_____ <20%___50-64%_>=85% MERV 14_____ 75-84%_>=90%__>=90% While the MERV 10 filter must capture more of something than the MERV 8, it's still not going to do much for smoke because "Particles from smoke tend to be very small, with a size range near the wavelength of visible light (0.4–0.7 micrometers)" (WILDFIRE SMOKE: A GUIDE FOR PUBLIC HEALTH OFFICIALS, P. 12. EPA Aug 2019). HEPA air purifiers are overkill if you only have allergies and need to filter pollen. The cost of replacement HEPA filters in 1-2 years would be more than this whole fan. So if you want to save money, cool yourself off, and filter pollen, mold spores, and most dust, get this and put a MERV 8 filter in it. Once you have it, in a pinch if you need to purify a small amount of air because of smoke, airborne virus particles, etc. you can put a MERV 13 or 14 filter in and it will help a little bit. But if you really need to *purify* a lot of air, and don't need a cooling fan, buy a HEPA air purifier. I made two videos to try to demonstrate the difference in air flow, not knowing Amazon only allowed 1 video per review. The videos don't show the full effect you feel: with MERV 8 you can still feel a cooling breeze, not with MERV 14. I included the MERV 14 video, but you'll have to take my word for it that although the streamer (tissue) moving quite a bit, it's a wimpy breeze. P.S. if someone has had success taping a pleated filter to an ordinary box fan and it worked for years, please post the details (like which brand and model of fan & filter). 18 Jan 2022 update: added MERV 14 info. 4 Dec 2023 update: updated years of use and MERV 8 filter price. Increased rating from 4 to 5 because long term use demonstrates it still performs as it did when new. Reformatted the MERV 8,10,14 table for (hopefully) better readability. Also bought a 2nd one for my son, who requested it instead of an air purifier.

## Frequently Bought Together

- Lasko Air Flex 20" 2-in-1 Box Fan and Air Purifier in One with MERV10 Air Purifying Filter for Cleaner and Cooling Breeze, 3 Speeds, Steel Body, FF305
- Aerostar 20x20x1 MERV 8 - 6 Count - High Efficiency Pleated HVAC, Furnace & Air Conditioner Filters - Removes Dust, Lint, Mold & Allergy-Causing Pollen
- Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-19*