Genuine Hunter 31027 replacement air purifier filter. Fits Hunter air purifier model 408621. 

• HEPAtech filtration removes up to 99.97% of airborne particles as small as 0.3 microns in size including smoke, dust, pollen, pet hair and dander, mold spores and dust mites
• Recommended to replace or clean every 6 months for maximum efficiency, or more often depending on air quality & environmental factors
• Package contains 1 replacement filter
• Dimensions: 5-1/2 x 2-1/2 x 12-3/4 inches
• This filter does NOT fit any models other than 408621

Fits