Blueair Blue Pure 511i Max Fabric Pre-Filter Seabed

Replacement fabric pre-filter for the Blueair Blue Pure 511i Max air purifier. The Seabed-colored pre-filter captures large particles, dust, and pet hair before air reaches the main filter, extending filter life and improving overall purification efficiency. Easy to install and designed for regular maintenance. Replace every 3 months or as needed based on air quality and usage.