GeneralAire Legacy Flow Through Humidifier with Manual Humidistat Used workatable device. Looks and comes exactly as on picture. Comes with NEW 24V Stainless Steel Solenoid Valve. No other accessories. No filter. GeneralAire 1042DMM Legacy Flow Through Humidifier with the Select-Control Manual Humidistat. A highly efficient flow-through unit that delivers 19.2 GPD. For home sizes up to 2,800 sq ft Includes all components normally required for complete installation: • 24V Stainless Steel Solenoid Valve (new) * Manual Humidistat (used) Humidifiers add moisture to the air in your home. As air from the furnace passes through a water soaked pad, it absorbs moisture and then returns for distribution throughout your home. Water is metered into the KineticFlo® Trough and dispersed uniformly across the pad. Un-evaporated water drains from the bottom of the unit to eliminate mineral build up