Mbetter 511i Max Replacement Filters, 2-Pack

Mbetter 511i Max replacement filters are listed as a two-pack for the Blue Pure 511i Max air purifier. The listing describes non-woven fabric and activated carbon construction, and specifically warns that these filters do not fit the Blue Pure 511.

At a glance

The listing states compatibility with the Blue Pure 511i Max and explicitly excludes the Blue Pure 511.
Described as non-woven fabric with activated carbon for particle filtration and household odors.
Manufacturer recommends cleaning every 2–4 weeks and replacing every 4–6 months.

Price

$27.54Save 17%

Reference price: ~~$32.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Two filters are listed, allowing a replacement to be kept on hand.
Activated carbon is included in the described construction, with the listing positioning it for cooking, pet, and smoke odors.

Technical specifications

4 specifications

Identity
Brand	Mbetter
Model	511i Max

Dimensions and installation
Dimensions listed	11.2"L x 2.7"W x 8"Th

Materials and protection
Material listed	filters

What to know before buying

Listing details to confirm

Compatibility is specifically claimed for the Blue Pure 511i Max, not the Blue Pure 511. Confirm the purifier model before ordering. The listing claims 99.97% filtration of particles as small as 0.3 microns and a 4–6 month replacement interval, which are manufacturer statements rather than independently verified results. It also says the purifier’s reset function depends on the machine.

What’s in the box

Included

Who is it for?

A good fit for

Owners of a Blue Pure 511i Max seeking two replacement filters.
Buyers looking for a filter listing that specifies activated carbon and a cleaning and replacement schedule.

Less suited to

Owners of a Blue Pure 511 or another purifier model, since the listing says it is not compatible with the Blue Pure 511.

Mbetter 511i Max Replacement Filters, 2-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 81 ratings

5 stars84%84%
4 stars10%10%
3 stars4%4%
2 stars0%0%
1 star2%2%

Only aggregate ratings are available, with a generally favorable distribution alongside a small one-star share. Those figures do not identify specific strengths, problems, or compatibility outcomes, so they offer limited guidance beyond indicating varied customer ratings.

Frequently asked questions

Which purifier is this filter listed for?

The listing names the Blue Pure 511i Max and says it is not compatible with the Blue Pure 511. Check the exact model on your purifier.

What materials are described?

The listing describes non-woven fabric and activated carbon.

How often does the listing recommend cleaning and replacement?

It recommends cleaning every 2–4 weeks and replacing every 4–6 months. Actual service needs can depend on use and conditions.

Does the listing say the filter reset will work?

It claims compatibility with the internal sensor system, but says reset support depends on whether the purifier has a reset function and supports a new filter.