Rugged Cabinet: One-piece molded plastic cabinet is water-tight and corrosion resistant. Access Door: Permits complete access to cabinet. Polyester Foam Filter Media: Offers large evaporation capacity and can be easily removed for cleaning. Transformer: 20VA (120/24 VAC) standard equipment. Nozzle Assembly Collar: 6-inch plastic collar, nozzle spray assembly and 24-volt solenoid water valve comes in one complete assembly and 24-volt solenoid water valve comes in one complete assembly and is easily inserted. Damper Starting Collar: 6-inch starting collar with damper/air scoop and manual pull chain can be easily installed in plenum or duct. Drain Outlet Fitting: Molded into bottom of cabinet for easy connection of drain hose. Saddle Valve: Comes complete with necessary fittings as standard equipment. Humidistat: Standard combination wall or duct-mounted humidistat provides automatic control of room relative humidity. Current Sensing Relay: Optional relay allows unit to accommodate multi-speed direct drive blowers.