Package Contains 1 True Hepa Replacement Particle Filters.
Recommended to change filter once every 6 months, or dependent on usage.
This is NOT a Blueair OEM product. The Blueair brand names and logos are the registered trademarks of their respective owners. Any use of the Blueair brand name or model designation for this product is made solely for purposes of demonstrating compatibility. Additional Details ------------------------------ Is autographed: false