Aeration units sold as an integral part of water purification and filtration units

Electric fans

Shoes, namely, dress shoes, sports shoes, casual shoes, cross trainers, sandals, and slippers

prerecorded video tapes featuring and explanation of architectural and air-conditioning engineering, motion picture film featuring an explanation of architectural and air-conditioning engineering, exposed slide film

climate control systems consisting of digital thermostat, temperature and pressure sensors, air conditioning, ventilation and drying control devices

device, namely, an electronic controller that controls the ventilation system in homes

electronic HVAC controller