Photo 1 of Humidistat missing and thick scale buildup on the filter.----------------------------------------------------------AprilAire 300 Self-Contained Fan Powered Whole-House Humidifier, for Homes with Ducted Forced Air Furnace Systems, Boilers, Mini-Splits, Rad

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Photo 1 of Humidistat missing and thick scale buildup on the filter.----------------------------------------------------------AprilAire 300 Self-Contained Fan Powered Whole-House Humidifier, for Homes with Ducted Forced Air Furnace Systems, Boilers, Mini-Splits, RadPhoto 2 of Humidistat missing and thick scale buildup on the filter.----------------------------------------------------------AprilAire 300 Self-Contained Fan Powered Whole-House Humidifier, for Homes with Ducted Forced Air Furnace Systems, Boilers, Mini-Splits, RadPhoto 3 of Humidistat missing and thick scale buildup on the filter.----------------------------------------------------------AprilAire 300 Self-Contained Fan Powered Whole-House Humidifier, for Homes with Ducted Forced Air Furnace Systems, Boilers, Mini-Splits, RadPhoto 4 of Humidistat missing and thick scale buildup on the filter.----------------------------------------------------------AprilAire 300 Self-Contained Fan Powered Whole-House Humidifier, for Homes with Ducted Forced Air Furnace Systems, Boilers, Mini-Splits, Rad