HEAT EXCHANGE DEVICES; SUCH AS UNIT HEATERS, CONVECTORS, CONVECTOR CABINETS, PARTS FOR THE FOREGOING, BLAST COILS, EVAPORATOR COILS, STEAM DISTRIBUTING COILS, AND WATER COILS FOR SPACE TEMPERATURE CONDITIONING; SUCH AS FLUID TEMPERATURE REGULATING RADIATORS AND PARTS THEREFOR, AND SUPERCHARGER INTERCOOLERS AND AFTERCOOLERS FOR USE WITH STATIONARY AND MARINE GAS, GASOLINE, AND DIESEL ENGINES AND AIR COMPRESSORS; AND SUCH AS HEAT TRANSFER APPARATUS OF THE TUBE AND SHELL TYPE USED IN DISTILLATION, CHEMICAL PROCESSES, AND COOLING OF QUENCHING OILS