Air ventilation apparatus and instruments in the nature of ventilation terminals; air conditioning panels for use in walk-in coolers; refrigerating cabinets for the storage of food; refrigerating cabinets for storing meat; refrigerating cabinets; refrigerating food display apparatus cabinets; freezer cabinets; freezers; cooling installations for water; cooling appliances and installations in the nature of water cooling installations and air cooling apparatus; refrigerating installations; refr...