The Hamilton EP036 R is the correct compatible replacement filter for the following humidifier models:

The Hamilton EP036 Humidifier Wick Filter is a replacement humidifier filter for the Hamilton furnace humidifier model 10HF. This wick filter measures approximately 9 7/8" x 12 1/4" x 1 3/8" and traps mineral pollutants in water and prevents them from entering your home. Replace these evaporator pads every 6 months or more often in hard water areas for the best performance.