2 Pack 311 Auto Filters Replacement, Compatible with Blueair Blue Pure 311 Auto Air Purifier, 2 in 1 HEPASilent and Activated Carbon Filter

NOTE: Not fit for 311 non-auto, not fit for 411 models. please make sure the air purifier model is compatible Blue Pure 311 auto Two-Layer Design: 311 auto replacement filters compatible with 311 auto, feature high-efficiency 2-in-1 filtration systems ( True HEPA Filter and Activated Carbon filter ). Captures up to 99.97% of airborne particles, including smoke and pet dander. Meanwhile, the activated carbon filter effectively eliminates household odors from pets, smoking, cooking, and VOCs Upgraded 311 Filter: 311 auto filter replacement is uniquely tailored for compatibility with Blue Pure 311 auto air purifiers. It boasts a 360-degree air intake and offers up to four times the filter surface area compared to the other filters. It has undergone rigorous testing to ensure compatibility and longevity Note: We recommend you replacing your filter every 3-6 months or depends on how often you use to protect your air purifier better AFTER SALES: adhere to provide all customers with a simple, streamlined shopping experience of filter replacement parts. We insist on being product-oriented and customer-centered. Any reason of quality or compatibility within 90 days, contact us timely and we are here 24 hours offering service and helping you solve your problems