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Alternative SmokeBlock replacement filter

Blueair Blue Pure 411i Max, 411a Max SmokeBlock Filter – 111237 replacement filter

Blue Pure 411i Max, 411a Max SmokeBlock Filter (111237) fits Blueair Blue Pure 411a Max and Blueair Blue Pure 411i Max according to the cited Blueair source.

Official manufacturer Blue Pure 411i Max, 411a Max SmokeBlock Filter 111237 Check official Blueair availability Non-affiliate link to the cited official product page.
Marketplace search Check eBay prices for 111237 Sponsored eBay links. We may earn a commission from qualifying purchases.

Quick fit check

Blue Pure 411i Max, 411a Max SmokeBlock Filter fit and replacement facts

Part number111237
Compatible models2
Filter roleAlternative SmokeBlock replacement filter

Blueair states that, depending on usage, the filter will last up to 9 months.

Compatible Blueair models

Follow a model link for its complete primary, optional, specialty, and alternative filter list.

Model Filter Part number Role Source Marketplace
Blueair Blue Pure 411a Max Blue Pure 411i Max, 411a Max SmokeBlock Filter 111237 Alternative SmokeBlock replacement filter Blueair Official Blue Pure 411i Max, 411a Max SmokeBlock Filter Check prices
Blueair Blue Pure 411i Max Blue Pure 411i Max, 411a Max SmokeBlock Filter 111237 Alternative SmokeBlock replacement filter Blueair Official Blue Pure 411i Max, 411a Max SmokeBlock Filter Check prices

Buying checklist

What to check in a filter listing

Confirm that the listing names part 111237 and one of the compatible models: Blueair Blue Pure 411a Max and Blueair Blue Pure 411i Max. Similar-looking filters are not proof of fit.

Decide whether you want an OEM or aftermarket filter, then compare the included pieces, product photos, seller details, delivery estimate, and total price.

Care guidance

Replacement schedule

Blueair states that, depending on usage, the filter will last up to 9 months.

Usage conditions can affect service life. Follow the cited manufacturer guidance for this part.

Compare compatible options

These filters share at least one officially cited model within the same brand, but may serve a different primary or optional role. Check each part page before buying.

Frequently asked questions

How often should I replace the Blueair Blue Pure 411i Max, 411a Max SmokeBlock Filter (111237)?

Blueair states that, depending on usage, the filter will last up to 9 months.

Which Blueair models use the Blue Pure 411i Max, 411a Max SmokeBlock Filter 111237?

According to the official Blueair product page, Blue Pure 411i Max, 411a Max SmokeBlock Filter (111237) fits Blueair Blue Pure 411a Max and Blueair Blue Pure 411i Max. Verify the model label on your unit before ordering.

Do aftermarket 111237 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 111237, review the listing details, and verify the model label on your unit before buying.

Manufacturer source

Official Blueair product data identifies Blue Pure 411i Max, 411a Max SmokeBlock Filter, SKU 111237, as compatible only with Blue Pure 411i Max and Blue Pure 411a Max.

Blueair Official Blue Pure 411i Max, 411a Max SmokeBlock Filter

Source compatibility checked 2026-07-22. Recheck the listing and your purifier label before ordering.