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		                        | National Stock Number:
 4520-01-539-5767
 
 Federal Supply Class:
 4520
 
 National Item Identification Number:
 015395767
 
 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 DUCT |  | MOUNTING TYPE | VENTILATION DUCT |  | SPECIAL FEATURES | 450 VOLT 3 PHASE 60 HERTZ ELEMENT | 
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