PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILH4607Heater,duct Type,portable

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4520-00-203-0224 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-203-0224 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-203-0224. Primary manufacturer part number: MILH4607.
Features
  • Heater,duct Type,portable — FSC 4520
  • Heat Medium Type: AIR
  • Fuel Consumption Rate Per Hour: 4.0 GALLONS
  • Width: 20.000 INCHES NOMINAL IN
  • Heat Outlet Quantity: 1
  • Air Circulation Device: PROPELLER FAN
  • Integral Fuel Tank Capacity: 20.0 GALLONS
  • Operating Control Type: THERMOSTATIC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,duct Type,portable, cataloged under National Stock Number 4520-00-203-0224, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4520-00-203-0224
Primary Part NumberMILH4607
Item NameHeater,duct Type,portable
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Heat Medium TypeAIR
Fuel Consumption Rate Per Hour4.0 GALLONS
Width20.000 INCHES NOMINAL IN
Heat Outlet Quantity1
Air Circulation DevicePROPELLER FAN
Integral Fuel Tank Capacity20.0 GALLONS
Operating Control TypeTHERMOSTATIC
Depth49.000 INCHES NOMINAL IN
Heat Directing DeviceFLEXIBLE DUCTS
Air Filter TypeREPLACEABLE PREFORMED
Circulated Air TypeHEATED
Heat Delivery Rate400000.0 BRITISH THERMAL UNIT
Current TypeAC
Frequency in Hertz60.0
Quantity1
Heat Discharge Outlet TypeSTATIONARY
Prime Mover TypeGASOLINE ENGINE
PhaseTHREE
Mounting TypeTRAILER
Fuel TypeGASOLINE
Heating Element TypeCOMBUSTION CHAMBER
Heat Delivery DirectionHORIZONTAL
Ignition MethodELECTRODE
Maximum Air Flow Rate810.0 CUBIC FEET PER MINUTE
Current Rating in Amps10.0
Inclosure MaterialSTEEL
Fuel Feed MethodINTERNAL PUMP
Speed AdjustmentsSINGLE SPEED
Height26.000 INCHES NOMINAL IN
Voltage in Volts220.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4520-00-054-4716 INTERCHANGEABLE
Heater,duct Type,portable
4520-00-223-3221 INTERCHANGEABLE
Heater,duct Type,portable
4520-00-620-4055 INTERCHANGEABLE
Heater,duct Type,portable
4520-00-915-7789 INTERCHANGEABLE
Heater,duct Type,portable
4520-00-980-3199PH400 INTERCHANGEABLE
Heater,duct Type,portable
Hdt Expeditionary Systems Inc
4520-01-267-0241 INTERCHANGEABLE
Heater,duct Type,portable
Cross-Reference Index
Part NumberManufacturer
MILH4607 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILH4607USAFTYPEH1CLASS1AND2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4520-00-054-4716INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE
4520-00-223-3221INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE
4520-00-620-4055INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE
4520-00-915-7789INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE
4520-00-980-3199INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE
PH400
4520-01-267-0241INTERCHANGEABLE
HEATER,DUCT TYPE,PORTABLE

Frequently Asked Questions

What is NSN 4520-00-203-0224?

NSN 4520-00-203-0224 is a Heater,duct Type,portable, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4520 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4520-00-203-0224?

NSN 4520-00-203-0224 has 2 cross-referenced part numbers: MILH4607 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILH4607USAFTYPEH1CLASS1AND2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4520-00-203-0224?

There are 6 known substitutes for 4520-00-203-0224: 4520-00-054-4716, 4520-00-223-3221, 4520-00-620-4055 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILH4607?

Key specifications for MILH4607: Heat Medium Type: AIR; Fuel Consumption Rate Per Hour: 4.0 GALLONS; Width: 20.000 INCHES NOMINAL IN; Heat Outlet Quantity: 1. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4520-00-203-0224 still in active supply?

NSN 4520-00-203-0224 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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