Search·Alen

Use this page to see which air purifier models take this cartridge, check suggested change timing when we have it, and open retailer links when you’re ready to buy.

Brand

Alen

This filter’s OEM number is linked to the purifier models below in our reference. If yours is listed, open buying options when you’re ready—always match the number on your current cartridge.

ALEN-FL40-HEPA

BreatheSmart 45i / Flex HEPA layer

Replace about every 12 months

Where to buy

OEM / manufacturer catalog (keyword lookup)

Fits these models (4)

BreatheSmart 45iAlen
BreatheSmart 45i (Pet)Alen
BreatheSmart FlexAlen
BreatheSmart Flex (Pet)Alen

Notes & next steps

Search again if you need a different model or part number.

FL40 layer for newer BreatheSmart