This high performance activated carbon filter removes odors, smoke, chemicals and more from the air entering the dehumidifier. A must for allergy and asthma sufferers, this filter is lab tested to trap 99.97% of harmful airborne particles, bacteria, germs and pollutants. The filter should be changed every 3-4 months. Depending on the pollutants in the area of application, it can ensure up to a year of use. Two (2) piece packaging, inside nylon. Dimensions Height, Length, Width 235*143*1 mm