Honeywell HC-818 Humidifier Filter Pad

The Honeywell HC-818, also called AC-818, is offered in a convenient case of 3. These filters have a patented rigid support, providing sturdiness throughout the life of the filter. Recommended change is at the beginning of each season or every two (2) months, depending on usage. These filters have an approximate size of 8" x 9" x 2".