Description
westinghouse humidifier evaporator pad Size:9 3 4" x 10" x 1 3 4" 000 m2 adsorption surface area 97 efficiency True HEPA 000 m2 adsorption surface area 2 inner carbon filters and Replacement O ring gasket Lifespan: 1 year (less with hard water) The pad is coated with a hydrophilic material that absorbs and holds water flowing through the pad