Blueair Blue Pure F4MAX Filter for 411i Max
- 411i Max and 411a Max purifiers, not 411, 411 Plus or 411 Auto
- 99.97% of particles down to 0.1 microns
- 13.9 x 9.8 x 4.1 inches
- Pleated polyester and polypropylene, slide in
- Activated carbon for light odors
Last refreshed Jun 15, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
The genuine filter for the newer Max series in this purifier size, trapping fine particles and light odors. It does not fit the earlier models in the same family.
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ASIN: B08KPJQBQTModel: Blue Pure F4MAXCategory: Air Purifier Filters
Sizes Available
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Overview
An owner of a newer Max series purifier gets the genuine pleated filter that slides back into the unit in seconds. This Blueair filter combines mechanical and electrostatic layers for fine particles, with carbon for light smells.
Quiet, efficient filtration that matches the purifier's design is the case for a genuine part. Buyers must confirm their model, since the older versions look similar but need a different filter.
Who it's for
Bedroom, office and living room purifier owners with allergies or pets get a direct swap. Owners of the older versions should buy the filter matched to their model.
Pros and cons
- Slide in installation
- Fine particle capture
- Carbon layer for odors
- Fits only two models
- Older versions excluded
- Odor control limited to light smells
Performance notes
Electrostatic charge lets the media trap small particles without a tightly packed pleat, which holds airflow up and fan noise down. Carbon soaks up odors until saturated, so heavy smoke shortens its useful life.
Specifications
| Brand | Brand |
|---|---|
| Model | Blue Pure F4MAX |
| Dimensions & fit | |
| Item Dimensions L x W x Thickness | 13.9 x 9.8 x 4.1 inches |
| Power & efficiency | |
| Filtration efficiency | 99.97% of particles down to 0.1 microns |
| Construction & materials | |
| Material Type | Polyester, polypropylene |
| Air Filter Construction | Pleated |
| Compatibility & installation | |
| Compatible Devices | 411i Max, 411a Max |
| Incompatible models | 411, 411 Plus, 411 Auto |
| Filter mounting type | Slide in |
| Included components | |
| Included Components | Replacement filter |
| Other details | |
| Filter Shape | Rectangular |
Frequently asked questions
How do I install the Blueair F4MAX filter?
It is a slide in rectangular filter. Remove the old filter from the 411 Max purifier and slide the new one in its place.
Does the F4MAX fit the Blue Pure 411 Auto?
No. It is not compatible with the 411, 411 Plus or 411 Auto.
Does the Blueair F4MAX remove smoke?
It captures smoke particles, and the carbon layer traps light odors from smoking.