🌬️ Breathe Better, Live Smarter — Upgrade Your Air Game Now!
The Filter-Monster Replacement Filter (model BA400-FM1) is a lightweight, compact, and highly efficient particle filter designed specifically for Blueair 400 Series classic air purifiers. Made from durable fiberglass and polypropylene, it ensures superior air purification by capturing fine particles, maintaining optimal performance without the need for batteries.
| Brand Name | Filter-Monster.com |
| Model Info | BA400-FM1 |
| Item Weight | 2.7 pounds |
| Product Dimensions | 10 x 4 x 21 inches |
| Country of Origin | China |
| Item model number | BA400-FM1 |
| Is Discontinued By Manufacturer | No |
| Part Number | BA400-FM1-AZ |
| Compatible Device | Air Purifier |
| Material Type | Polypropylene, Fiberglass |
| Batteries Included? | No |
| Batteries Required? | No |
G**$
Works great!
Works great and a lot less money than the factory brand.
E**B
Great replacement filter
The media could not be loaded. I’m happy with this filter. It’s fits perfect in my blue air 403. Air flow seems the same, but I usually keep on low. Super easy to replace. As some have mentioned, there was a slight plastic smell at first but it went away in a day of running it.
S**6
great product
great product
L**L
Much cheaper than one from Blueair.
I have been buying the ones from Blueair for years, but when Costco stopped selling them, I found that Blueairs from Amazon were much more expensive. I hope the Filter-Monsters are of equivalent quality.
G**
Blueair 400 Series
Fits like a glove. Direct replacement for our 10 plus year old and going strong Blueair air purifier. Works perfectly.
G**O
Looks and fits great
The price is great compared to what I was paying
A**.
Can't tell difference between this and OEM Blueair
With the OEM Blueair filters skyrocketing in price over the years, I decided to try this after market filter. Everything seems identical to the OEM Blueair filter. Even the writing on the filter looks like the OEM Blueair filter. My filter was used so I could tell them apart, but if a new OEM Blueair filter and this filter was mixed up like the shell game, I couldn't tell them apart. It fit into my machine the same way as the OEM Blueair filter fit and the machine seems to function just like it does with the OEM Blueair filters.
A**R
Very good product.
Can't tell the difference between this filter and the the ones I previously bought from Blueair. Much better price.
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