AIRx filters are designed and built to the same fit and performance specifications as the original filters that came with your purifier.  Performance and fit are guaranteed, backed by our 100% Money-Back Guarantee.   

• Carbon Pre-Filter removes excess dust to extend the life of the HEPA filter
• Carbon removes harmful vapors and odors that particle filters can't remove
• Pre-filters should be replaced every 3-6 months as needed based on your environment and run time
• 16" x 27" x .25". Can be cut to fit