2-pack 511 Replacement Filter for Blueair Blue Pure 511 Air Purifier

Compatibility: This 511 replacement filter fully compatible with BLUEAIR Blue Pure 511 Air Purifier ONLY. Not Compatible with (511i) Max Air Purifier | Attention Please:This Filter is ONLY compatible with 511 Air Purifier, Not compatible with 211+ and 211+ Auto, 411i max, 411a max, 311, 121, or other models, Please check the model number before placing the order | High Efficient FillteringThe HEPA filt-er Clean at least 99.97% of tiny airborne particles like smoke down to 0.1 microns, and clean pet dander, and dust, The activated carbon filt-er clean up light household from smoking, pets, and cooking fume | Performance PeakFor your machine performance peak, based on actual usage the filter should be replaced every 6 months, it's easy to install, and no tools are required. | We Treasure Our Customers: If you have any questions about our product, please feel free to contact us, and we'll solve them within 24 hours, Filter made of FSC-Certified paper