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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

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

Q: What size filters fit the FF305 fan?

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.

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: Does the filter go on the "back" or "front" ("intake" or "output") side of the fan?

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.

4.2/5

Product ID: 233931026

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Details

Color
White
Brand
Lasko
Product Dimensions
6.36"D x x
Particle Retention Size
72 Inches
Wattage
100 watts

🌀3 energy efficient speeds

💨2000 CFM airflow

🛡️Durable steel body

Description

🌬️ Breathe in the freshness, exhale the ordinary!

BUILT TO LAST - Engineered with a weather-shield motor and UV-protected paint for durability.
DUAL FUNCTIONALITY - Enjoy the perfect blend of air purification and cooling in one sleek design.
CUSTOMIZABLE CLEAN AIR - Easily replace filters to tailor your air quality to your needs.
WHISPER QUIET OPERATION - Keep your space serene with a noise level of just 10 dB.
BREATHE EASY LIVE FRESH - Experience a cleaner, cooler environment with the Lasko Air Flex.

The Lasko Air Flex 20" 2-in-1 Box Fan and Air Purifier combines powerful air circulation with effective air purification. Featuring a MERV 10 filter, it delivers a refreshing breeze while ensuring cleaner air. With three energy-efficient speeds and a durable steel body, this fan is designed for long-lasting performance and quiet operation, making it an essential addition to any modern home.

Have a Question? See What Others Asked

What size filters fit the FF305 fan?

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.

Is t just 110 volts or 110-220v so international buyers can also benefit ?

Does the filter go on the "back" or "front" ("intake" or "output") side of the fan?

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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TrustScore 4.5 | 7,300+ reviews

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