[ Pneumatic controllers for air conditioning units; zone control systems for indoor agricultural heating and air conditioning comprising of a series of thermostats connected to a control panel which opens and closes a series of dampers; ] electrical controls for humidifiers; thermostats [ ; electrical controllers for air conditioning units; control panels for controlling indoor agricultural heating, air conditioning and air cleaning and purification systems ]

Dehumidifiers, humidifiers, [ air cleaners and purifiers ] for indoor agricultural use, incorporating an air filter and accompanying housing [ ; fresh air exchangers for cleaning and purifying air in indoor agricultural forced air heating and air conditioning systems; heat recovery ventilators for heating and cooling applications; electrically powered heat exchangers not being parts of machines for indoor agricultural use; porous pad evaporators used in humidifiers; Evaporative air coolers for indoor agricultural use; air humidifying apparatus with ventilating fans for industrial purposes; UV germicidal lamps for purifying air; UV lamps not for medical purposes ]