




🌬️ Breathe brilliance, silently and sustainably.
The Blueair F400Pa Hepasilent Particle Filter is a high-performance replacement filter designed for the Classic 400 Series air purifiers. Featuring ultrasonically bonded gradient filter media, it captures particles as small as 0.1 micron while operating quietly at 35 decibels. Made from 100% recyclable antibacterial fibers, this filter combines eco-friendly materials with advanced filtration technology, ensuring cleaner air and a healthier environment. Compatible with multiple Classic 400 models and backed by a minimum 1-year manufacturer warranty.








| Brand Name | BLUEAIR |
| Model Info | Classic 405 |
| Product Dimensions | 10.16 x 25.4 x 53.34 cm; 500 g |
| Noise | 35 Decibels |
| Part Number | 400 PF |
| Special Features | Gradient structure, ultrasonically bonded filter media, removes particles down to 0.1 micron |
| Color | white |
| Compatible Device | Air Purifiers |
| Certification | certified frustration-free |
| Material Type | Polypropylene & Polyethylene Fibers Anti-Bacterial 100% Recyclable |
| Included Components | 400 series Particle filter |
| Batteries Included? | No |
| Batteries Required? | No |
| Item Weight | 500 g |
S**S
Sold me a filter that was already written down as defective, and returned by a previous buyer.
Sold me a filter that was already written down as defective, and returned by a previous buyer. They even wrote the dates when it was bought and returned.I tried it and the smell was horrible, like a car that was leaking gasoline and oilWho sells someone something that’s already defective.
W**L
Quality, authentic
Quality, authentic
T**L
Great And Genuine Product
Great filter, works perfect with my Blueair device.
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