Filter-Monster branded replacement compatible with Coway 400/400S Airmega Max 2 filter removes smoke, dust, pollen, pet dander, mold spores and dust mites from the air.

• Compatibility: Compatible with Coway 400/400S Airmega Max 2 filters. Engineered to fit Coway Airmega 400 and 400S air purifiers.
• Air Quality Improvement: True HEPA filtration is rated H13 and removes up to 99.97% of airborne particles as small as 0.3 microns in size including dust, smoke, pollen, pet hair and dander, mold spores and dust mites. 
• Filtration Levels: Carbon filter reduces common odors as well as gases, chemicals and VOCs (Volatile Organic Compounds) from cooking, cleaning and smoking. Particle pre-filter captures larger particles first, extending life of HEPA filter.  
• Maintenance: Recommended to change this filter once every twelve (12) months under normal conditions, and more often under harsh air conditions. Package contains two (2) replacement filters, one (1)  for each side of your air purifier.
• Approximate Measurements: Each filter measures 14.37 x 11.02 x 1.77 inches.