Aprilaire 550m & GeneralAire 570m

Description Features: Original Factory Replacement Water Panel for Bryant / Carrier Humidifiers. Honeycomb filtration to trap mineral pollutants found in water and help prevent them from entering your home. For optimum performance, replace panel once every 6 months or more often in hard water areas. Same as Aprilaire #10 Specifications: Size: 9-1/2 x 9-3/4 x 1-1/2