🌬️ Breathe smarter, live fresher — don’t let stale air hold you back!
This 2-pack of Mbetter replacement filters is engineered exclusively for the Blueair Blue Pure 311 Auto air purifier. Featuring a 2-in-1 design combining HEPASilent filtration and activated carbon, these filters capture 99.99% of airborne particles as small as 0.03 micrometers. Designed for optimal performance, each filter lasts up to 9 months, ensuring your environment stays fresh and pollutant-free. Easy to install and backed by responsive customer support, these filters keep your air purifier running at peak efficiency.
| Brand Name | Mbetter |
| Model Info | mb311 |
| Item Weight | 1.57 pounds |
| Product Dimensions | 15 x 13.4 x 3.5 inches |
| Item model number | mb311 |
| Part Number | mb311 |
| Compatible Device | Air Purifier |
| Material Type | Activated Carbon Filter |
| Batteries Included? | No |
| Batteries Required? | No |
L**
Perfect fit and quality for less money ✅💰
The media could not be loaded. These replacement filters for the Blue Air 311i Max deliver exactly what I needed. The functionality is excellent they trap dust, pet dander, and odors effectively. It is easy to slide right into place without any struggle and the size is perfectly compatible with the blue air 311i Max just like the original filter.The quality feels premium the materials are sturdy, and the layers of HEPA and activated carbon are dense and well-made. I also appreciate that it comes in a 2-pack, which adds a great value for money , especially compared to the branded replacements.Highly recommend for anyone looking for reliable, high-quality filters that don’t break the bank!
M**3
Fits great!
Fit exactly, machine accepted it and cleared the error. Very happy and bookmarked for re-order in future.
T**K
Worth every penny
I will never buy any other brand when it come to air purification in my home. Find the size that works for you and get your Blueair in your home yesterday!
L**B
Filters for mini air humidifier
It worked out fine.It was just about 2inces longer, but I fixed it. I had to trim it.The one I have is the correct model but it is little smaller. So that's why I had to cancel the subscription. I will order in 6 mos but with the smaller filter
G**.
Doesn’t Fit and Smells!
Filters are oversized for the BlueAir 311 and give off an awful rubber smell. Not a usable proct and obviously made in China
Z**P
Air
Perfect fit, great price
P**
311i Max filters
These filters fit my 311i max Blueair unit as advertised. Very satisfied and quick delivery. 🙏🏻
G**D
Easy to order (unlike Blue Air site)
Seems to be working well. Easy to install.
TrustPilot
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