![Blueair Diagram showing which air purifier model should be used for the filter Blueair Diagram showing which air purifier model should be used for the filter](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw9b892e79/2024%20-%20Filter%20PDPs/Inside_211iMax.png?sw=468)
Designed specifically for the Blue Pure 211i Max.
Find the name of your air purifier on the label inside your air purifier.
![Blueair Blueair SmokeBlock uses 2x more activated carbon Blueair Blueair SmokeBlock uses 2x more activated carbon](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw5a897788/2024%20-%20Filter%20PDPs/2x%20more%20carbon.png?sw=468)
Removes up to 99.99% of wildfire smoke* along with extra protection against other wildfire emissions such as toxic gasses, smog, and odors**
![Blueair Fabric pre-filter Blueair Fabric pre-filter](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dwb6d035b0/2024%20-%20Filter%20PDPs/Pre-filter.png)
The first layer of protection, catches larger particles from the air.
![Blueair Main filter Blueair Main filter](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dwa572d865/2024%20-%20Filter%20PDPs/SmokeBlock-Filter.png)
Removes airborne allergens, like pollen, dust mite matter allergen, pet dander, germs, mold, bacteria & viruses.
![Blueair Activated carbon Blueair Activated carbon](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw7ea5499f/2024%20-%20Filter%20PDPs/Carbon.png)
Traps strong household odors from smoke and wildfire particles.
![Blueair Blueair RealTrack Technology Blueair Blueair RealTrack Technology](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dwd1e992dd/2024%20-%20Filter%20PDPs/211i%20Max_Filter%20Status.png?sw=468)
lifetime status
Blueair's proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time, and pollution levels.
![Blueair Blueair genuine filter Blueair Blueair genuine filter](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw7031beef/2024%20-%20Filter%20PDPs/Genuine%20filter.png?sw=468)
replacement filter
Protect your air purifier from damage
caused by unofficial filters.
![Blueair Image Blueair Image](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw00ec6c28/2023%20Icons/Icon_Bacteria.png)
With the unique filter design at least 99.97%³ of airborne particles, even down to 0.1 microns, are removed, while using less energy and producing less noise.
![Blueair Works 24/7, for six months straight Blueair Works 24/7, for six months straight](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw3ef1dc59/New/Icons/icon_onebutton.png)
To maintain optimal performance, we recommend changing your filter about once every 6-months when used 24 hours a day. Don't forget to save with our subscription program.
![Blueair Keeps clean air flowing, resists clogging Blueair Keeps clean air flowing, resists clogging](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw478ffea1/2023%20Icons/Icon_Dust.png)
This filter's unique structure is designed to filter high volumes of air while trapping even the smallest particles. It maintains maximum airflow because it's engineered to resist clogging.
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Recommended filter change6 months (4,380 hours) when used 24 hours a day
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Number of filters1
![F2MAX SmokeBlock Replacement Filter for 211i Max F2MAX SmokeBlock Replacement Filter for 211i Max](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Sites-blueair-master-catalog/default/dwecfe8d06/filters/blue/Max/Replacement%20Max/SmokeBlock/211i%20Max_Hero.png?sw=450&sh=450&sm=fit)
This filter is compatible with the Blue Pure 211i Max air purifier.
Purchasing a filter subscription saves you 15% on all future replacement filter orders + free shipping. At the time of purchase, the subscription will automatically schedule filter deliveries at the recommended six months. You can always adjust this timeframe from the 'My Account' section.
¹ A flat shipping rate of $25.00 will be charged on filter shipments to Alaska, Hawaii, and Puerto Rico. Additional charges may apply for shipments over 30 lbs. A flat shipping rate of $5 will be charged on orders under $39 that are not part of filter subscription.
*Compared to standard in-unit filter. Based on removal testing of particles 0.4-0.7um in 60min in a 30m3 room. Performance may vary.
**Tested on benzene, toluene, nitrogen oxide, sulfur dioxide in 30 min.