The Robitussin ACR832 Compatible Cool Moisture humidifier filter features Honeycomb filtration to trap mineral pollutants found in water and help prevent them from entering your home and fits models DH-830 and DH-832.
The filter measures approximately 4" x 6" x 1-1/2" and has 2 filters per box. For optimum performance, replace filter at the beginning of each season or every 2 months depending on use.