Blue Pure 311i+ (3450i) Max Pre-Filter

Compatible with Blue Pure 311i+ Max

4.3

Rated 4.3 out of 5 stars

18 Reviews

Smart Filtration, you can trust

Blue Pure 311i+ Max replacement pre-filter

Designed specifically for Blue Pure 311i+ Max.

Find the name of your air purifier on the label inside your air purifier.
Designed to fit into any lifestyle

5 different Scandinavian inspired colors allow you to personalize your air purifier to seamlessly blend into your home by complimenting your interiors.
Stockholm Fog pre-filter color included.
Quickly and easily change your pre-filter

Our washable fabric pre-filters extend the life of primary filters, catching large airborne particles such as dust, lint, pollen, and pet hair. They're colorful too, and can be customized to compliment your space.

4.3

Rated 4.3 out of 5 stars

Based on 18 reviews

83%would recommend this product

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18 reviews

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SI
SL i. t. R. R.
I recommend this product
Rated 5 out of 5 stars
1 year ago
SL in the Red Rocks
So easy to change the pre filter. Plus I like the color choices. Also…it’s washable!
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DS
Debra S.
Verified Buyer
I do not recommend this product
Rated 1 out of 5 stars
2 days ago
I am not impressed.
It has been a rough fall allergy season for me here in Minnesota this year 2026. I have had my BlueAir since August 2026. My house has been closed up since I received this product. I ran the first few days on the highest level and on low ever since 24 hours a day. I am not impressed with this air cleaner at all. I have no pets and keep the house closed up since August. It is not working for me and can't wait for our ( Minnesota )
first frost!!
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BlueEU Staging
9 hours ago
Thank you for sharing your feedback. We’re sorry to hear that you’re noticing minimal results from your Blue Pure 311i+ Max Pre-Filter. While the fabric pre-filter is designed as a first line of defense to catch larger particles like visible dust, hair, and pollen, severe allergy seasons or microscopic airborne allergens require the main combination filter and higher fan speeds to capture effectively-especially when the unit is running on lower settings. Our support team will reach out to you directly to check your current setup and help ensure your unit is performing properly.
SR
Stephen R.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
3 weeks ago
Our BlueAir is great!
And, customer service is great!
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SS
Sarah S.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
2 months ago
My second pre-filter
I ordered a new pre-filter not realizing that I could follow the washing instructions and reuse the original. No regrets having a second pre-filter so that when I take one off for washing, I can immediately put the second on and keep filtering!
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GA
Gail A.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
3 months ago
Blue air 311+
It works great in Lee the air clean.
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Blue Pure 311i+ (3450i) Max Pre-Filter

Blue Pure 311i+ (3450i) Max Pre-Filter

Smart Filtration, you can trust

Blue Pure 311i+ Max replacement pre-filter

Designed to fit into any lifestyle

Quickly and easily change your pre-filter