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		                             National Stock Number: 4520-01-539-5845
  Federal Supply Class: 4520
  National Item Identification Number: 015395845
  Description: HEATER,VENTILATION,DUCT TYPE
  Detail: A HEAT TRANSFERRING UNIT UTILIZING A SEPARATE SOURCE OF STEAM OR HOT WATER AS THE HEAT TRANSFER MEDIUM. IT CONSISTS OF FINNED PARALLEL TUBES JOINED TOGETHER BY A HEADER OR HEADERS AND IS DESIGNED FOR INSTALLATION IN THE DUCTS OF A FORCED AIR CIRCULATING SYSTEM. IT MAY BE PROVIDED WITH A FLANGED OUTER CASING TO FACILITATE MOUNTING OF THE UNIT IN PLANNED OR EXISTING DUCT WORK. CIRCULATION OF THE HEATED AIR IS ACHIEVED BY USE OF A BLOWER OR FAN NOT INTEGRAL WITH THE HEATING UNIT.
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  Manufacturer Information: 
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  Techincal Specification:
 | HEAT MEDIUM TYPE | AIR |  | HEATING ELEMENT TYPE | ELECTRIC NONIMMERSION |  | PART NAME ASSIGNED BY CONTROLLING AGENCY | ELECTRIC DUCT HEATER, SPIRAL WOUND |  | MOUNTING TYPE | VENTILATION DUCT |  | SPECIAL FEATURES | 450 VOLT 3 PHASE 60 HERTZ ELEMENT |   
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