The Heater,duct Type,portable, cataloged under National Stock Number 4520-00-588-0577, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-588-0577 |
| Item Name | Heater,duct Type,portable |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Speed Adjustments | SINGLE SPEED |
| Heat Delivery Rate | 230000.0 BRITISH THERMAL UNIT |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Integral Fuel Tank Capacity | 28.0 GALLONS |
| Heat Medium Type | AIR |
| Inclosure Material | STEEL |
| Reference Data and Literature | AF TO. 35E7-2-5-1/-3/-4 |
| Quantity | 1 |
| Voltage in Volts | 220.0 AND 440.0 |
| Fuel Type | 80/87 OCTANE GASOLINE AND 100/130 OCTANE GASOLINE AND 91/96 OCTANE GASOLINE AND 115/145 OCTANE GASOLINE |
| Heat Outlet Quantity | 2 |
| Specification/standard Data | 81349-MIL-H-26934 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | MD-1 TYPE |
| Heat Discharge Outlet Type | STATIONARY |
| Heat Delivery Direction | VERTICAL |
| Height | 42.000 INCHES NOMINAL IN |
| Air Circulation Device | SQUIRREL CAGE BLOWER |
| Entry Date | 85-08-16 |
| Surface Treatment | PAINT |
| Depth | 13.000 INCHES NOMINAL IN |
| Functional Description | DESIGNED TO PROVIDE ADJUSTABLE HEAT OUTPUT FOR HEATING OF AIRCRAFT ON THE GROUND |
| Width | 14.000 INCHES NOMINAL IN |
| Flue Connection Location | ANY ACCEPTABLE |
| Prime Mover Type | DIESEL ENGINE |
| Circulated Air Type | HEATED |
| Heat Directing Device | FLEXIBLE DUCTS |
| Ignition Method | MANUAL |
| Outlet Position | IN THE SAME DIRECTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILH26934TYPEMD1 | 4/1 Identification reference U.S. Government activity |
NSN 4520-00-588-0577 is a Heater,duct Type,portable, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-00-588-0577: Speed Adjustments: SINGLE SPEED; Heat Delivery Rate: 230000.0 BRITISH THERMAL UNIT; Phase: THREE; Frequency in Hertz: 60.0. 30 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.