The Heater,duct Type,portable, cataloged under National Stock Number 4520-00-219-7968, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-219-7968 |
| Item Name | Heater,duct Type,portable |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Speed Adjustments | SINGLE SPEED |
| Heat Delivery Rate | 400000.0 BRITISH THERMAL UNIT |
| Integral Fuel Tank Capacity | 20.0 GALLONS |
| Heat Medium Type | AIR |
| Quantity | 1 |
| Nondefinitive Spec/std Data | 1 TYPE |
| Height | 26.000 INCHES NOMINAL IN |
| Air Circulation Device | SQUIRREL CAGE BLOWER |
| Depth | 49.500 INCHES NOMINAL IN |
| Width | 20.500 INCHES NOMINAL IN |
| Flue Connection Location | ON TOP SIDE VERTICAL DISCHARGE |
| Prime Mover Type | GASOLINE ENGINE |
| Circulated Air Type | HEATED |
| Ignition Method | ELECTRODE |
| Mounting Type | TRAILER |
| Fuel Feed Method | INTERNAL PUMP |
| Heating Element Type | COMBUSTION CHAMBER |
| Operating Control Type | THERMOSTATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| H4607ANDTYPEH1ANDCLASS1 | 4/1 Identification reference U.S. Government activity |
| 332090 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4520-00-219-7968 is a Heater,duct Type,portable, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3020-00-479-8971, 5340-01-600-6311. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-00-219-7968: Speed Adjustments: SINGLE SPEED; Heat Delivery Rate: 400000.0 BRITISH THERMAL UNIT; Integral Fuel Tank Capacity: 20.0 GALLONS; Heat Medium Type: AIR. 18 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.