Alen

BreatheSmart FLEX

Model BreatheSmart FLEX

Verified compatibility

Representative illustration — not a photo of this exact product

Alen BreatheSmart FLEX with manufacturer-verified replacement-filter compatibility.

Product type: Air Purifier

Check that the model number on your unit's rating label matches exactly, including hyphens and suffix letters. Similar models often take different filters.

Verified replacement filters

Alen

45i/FLEX Essential Filter

B4-Pure

True HEPA, Activated Carbon, Pre-Filter

Verified compatibilityExact Fit

Filter details and sellers

Where to buy the compatible filters

B4-Pure

Alen
Alen 45i/FLEX Essential Filter
$69.00
In stock at last check
Checked August 22, 2026
Buy at Alen(opens in a new tab)

Where to buy this purifier

No seller listings are recorded for this purifier yet.

Prices and availability are shown as last recorded and can change at any time. Confirm both on the seller's page before ordering.

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