Filter-Monster - Replacement Filter Kit with Pre-Filters - Compatible with Austin Air Healthmate FR400 Air Purifier Filter and Austin Air Models HM400, HM402, HM405, HM410, and HM450

Compatibility: Replacement filter kit is compatible with Austin Air Healthmate FR400 Air Purifier filter. Fits Austin Air air purifier models HM400, HM402, HM405, HM410, HM450. | Air Quality Improvement: 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, and more. | Filtration Levels: Carbon pre-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 filter. | Maintenance: Recommended to change this filter once every five (5) years under normal conditions, and more often under harsh air conditions. Package contains one (1) replacement filter and two (2) pre-filters. | Approximate Measurements: 13.5 x 7.25 x 14.5 inches.