Fits Duracraft Natural Cool Moisture Humidifier models DH799, DH800, DH801, DH812, DH840, DH840C, DA1005 (AC-801) and DH7800. * 3 filters per box. * Measures approximately 7 1/2" x 7 3/4" x 1". * Duracraft humidifier wick replacement filters. * With antimicrobial agent!