Air conditioning equipment and parts and accessories therefor, namely, air conditioning outlet diffusers and, fittings in the nature of valves for air conditioners, air flow directors in the nature of in the nature of heating and cooling apparatus and installations, and return air grills; heating, cooling and ventilation equipment, namely, space heating apparatus, air cooling apparatus and ventilation apparatus

air conditioners, ventilation fans and air conditioning units for commercial, domestic and industrial use; and parts and accessories therefor, namely, airflow diffusers, ventilating louvers, branch fittings, reducers, joiners, valves, droppers, volume dampers and evaporative cooler plenums for use with heating, cooling and ventilation equipment