The Hunter 31911 is the correct replacement filter for the following humidifier models:
The Hunter 32200 Replacement Humidifier Wick Filter is a replacement humidifier filter for the 2-gallon Hunter 32200 and 38200 model humidifiers. This Humidifier wick filter features antimicrobial properties that protect against the growth of bacteria, fungi, and mold.
This wick humidifier filter will help you maintain the proper indoor air quality you desire in your home and will also help your Hunter humidifier operate at its peak performance. For the best results make sure to replace your filter regularly.
The Hunter 31911 specifications: