The Nispira HEPA Replacement Filter Compatible with Blueair Air Cleaner Purifier, Fits Blue Pure Mini Max Air Purifie Only (Please carefully check the model number) The Nispira HEPA filter can capture 99.97 % of the air particles, as small as 0.3 microns. Folding granular activated carbon filters: Nispira filter removes smoke, odors from pets, cooking smells and VOCs chemical. Give you a peace of mind for fresh air. Easy to install: no additional tools are required to release the hand from the complex replacement steps. 1 Filter included. Dimension 8.8"L x 1"W x 6"Th. Suggest replacing the filter every 6 months the most to optimize the performance. Quality meets or exceeds the leading national brand's. The Nispira HEPA Replacement Filter protects against both gaseous and pollutants. Nispira filter removes smoke, odors from pets, cooking smells and VOCs chemical. Give you a peace of mind for fresh air. Moreover, the advanced polypropylene filter effectively removes particle size as small as 0.3 microns. Using a 360-degree air intake and up to 4 times the filter surface area than competing replacement filters. The Nispira Replacement Particle filter typically maintains air quality for six months to a year, with the actual lifespan influenced by environmental factors and fan usage. 1 Filter included. Dimension 8.8"L x 1"W x 6"Th. Suggest replacing the filter every 6 months the most to optimize the performance. Quality meets or exceeds the leading national brand's.