Keep the air in your refrigerator pure and fresh. The LG Fresh Air filter with forced air circulation and dedicated fan pushes cleaner, deodorized air into the refrigerator. The indicator light on the refrigerator display alerts you to change the replacement filter when necessary. • Replacement filter for Fresh Air filter refrigeration models • Replace fliter approximately every 6 months • The indicator light on the refrigerator display alerts you to change the replacement filter when necessary • Used with Fresh AIr Filter Refrigeration models LFX33975, LFX31945, LFX31935, LFX31925, LMX31985 and LFX25991