U.S. Home Filter is your source for JC Penney humidifier filter pad replacements. Your JC Penney humidifier uses the foam filter pad below that is a cut-to-fit style that is trimmed to the size needed. Approximate size of this humidifier pad is 6" x 65" x 3/8". This is used in your system to collect impurities before allowing fresh, humid air to be circulated within your home to increase the level of moisture in the air. It is recommended that your filter be changed one to two times per season, depending on usage.