| 
                                    
                                 | 
                             
                            
                                
                                     
                                 | 
                             
		                    
		                        
		                             National Stock Number: 4520-01-330-9413
  Federal Supply Class: 4520
  National Item Identification Number: 013309413
  Description: HEATER,DUCT TYPE,STATIONARY
  Detail: A DEVICE CAPABLE OF PRODUCING HEAT FROM GAS, LIQUID FUEL, OR AN ELECTRICAL HEATING ELEMENT DESIGNED FOR PERMANENT INSTALLATION IN SHEET METAL DUCTS OF A FORCED AIR CIRCULATING SYSTEM. IT CONSISTS OF (1) A FINNED, STEEL BURNER TUBE, A COMBUSTION AIR BLOWER, A CONTROL PANEL, AND A CONSTANT LEVEL FUEL SUPPLY SYSTEM OR (2) A DEVICE HAVING A HEATING ELEMENT WHICH WHEN CONNECTED TO AN ELECTRICAL SOURCE, DIRECTLY IMPARTS HEAT. IT MAY BE PROVIDED WITH A FLANGED OUTER CASING TO FACILITATE MOUNTING 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.
		                         | 
		                     
		                    
		                        
                                    
  Manufacturer Information:
 | 210-121885 | 74924 | INDEECO LLC |  | 210-30474-42 | 74924 | INDEECO LLC |  | 210-30474-42 IT | 74924 | INDEECO LLC |  | 210-30474-42 ITEM 1-35-2 | 74924 | INDEECO LLC |  | TFZU-67.66-48X24-440/3/3/24-BB5- | 74924 | INDEECO LLC |   
		                         | 
		                     
				            
					            
						            
  Techincal Specification:
 | CURRENT RATING IN AMPS | 153.77 |  | CURRENT TYPE | AC |  | DEPTH | 12.000 INCHES NOMINAL |  | DUCT HEIGHT | 24.000 INCHES |  | DUCT WIDTH | 48.000 INCHES |  | EXTRA LONG REFERENCE NUMBER | TFZU-67.66-48X24-440/3/3/24-BB5M3Q7U6ZZ2 |  | FREQUENCY IN HERTZ | 60.0 |  | HEAT DELIVERY RATE | 230855.92 BRITISH THERMAL UNIT |  | HEAT MEDIUM TYPE | AIR |  | HEATING ELEMENT TYPE | ELECTRIC NONIMMERSION |  | HEIGHT | 31.000 INCHES NOMINAL |  | INCLOSURE MATERIAL | STEEL CORROSION RESISTING |  | PHASE | THREE |  | MOUNTING TYPE | VENTILATION DUCT |  | OPERATING CONTROL TYPE | THERMAL SWITCH |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER |  | VOLTAGE IN VOLTS | 440.0 |  | WIDTH | 51.750 INCHES NOMINAL |   
					             | 
				             
		                 
		             |