Add to favorites

121 Replacement Filter Compatible with Blueair Blue Pure 121 Air Purifier, HEPA and Activated Carbon Filter, 1 Pack
Brand: Mbetter
Condition: Used
$3302
$7999
-59% Save $4697
Updated: 2 days ago
Description
🍃[Perfect compatible]: These filter have the same specification with original filter, replacement filters compatible with Blueair Blue Pure 121 Air Purifier to maintain superior performance over time and ensures your warranty remains intact.
🍃[Technology Innovation]: New activated carbon distribution technology, compared to carbon particles and carbon network distribution is more uniform, Absorbs household odors, fumes, chemicals and volatile organic compounds (VOCs) more quickly and effectively.
🍃[Superior performance]: 121 replacement filter removes annoying household odors, chemicals, and gases, as well as 99. 97% as small as 0. 1 μm of airborne particles, like pollen, dust and pet dander.
🍃[Easy to use]: Filter structure traps even the smallest particles and resists clogging to maintain maximum airflow. Our unique HEPA filtration technology allows our filters to be less dense, resulting in quieter and more energy efficient air purifiers.
🍃[Warranty]: We are committed to customer satisfaction, if you encounter any problems during use, please feel free to contact us, we will definitely give you a satisfactory answer within 24 hours.
2 Layer Filtration System:
1st layer. HEPA filter captures 99. 97% of particles as small as 0. 1 μm such as pollen,dust and pet dander.
2nd layer. Activated Carbon Filter absorbs household odors from pets,smoking,cooking and harmful VOC's. It is suggested to replace the filter every 6 months for optimal performance.
Replacement method:
When it's time to replace your filter (about every six months), start by unplugging your air purifier. Gently press the release buttons on either side until you hear a click, and lift off the top. Remove the old filter and replace it with a new one. Replace the top portion of the air purifier -it will click when it's in place- and plug back in.
Note:
To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day.
1st layer. HEPA filter captures 99. 97% of particles as small as 0. 1 μm such as pollen,dust and pet dander.
2nd layer. Activated Carbon Filter absorbs household odors from pets,smoking,cooking and harmful VOC's. It is suggested to replace the filter every 6 months for optimal performance.
Replacement method:
When it's time to replace your filter (about every six months), start by unplugging your air purifier. Gently press the release buttons on either side until you hear a click, and lift off the top. Remove the old filter and replace it with a new one. Replace the top portion of the air purifier -it will click when it's in place- and plug back in.
Note:
To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day.
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b09jrw231s
- Model:
- Blueair Blue Pure 121
- Country:
- US
- ASIN:
- B09JRW231S
- GTIN:
- 00194467119358
- UPC:
- 194467119358
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $47 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Mbetter products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.







