The Heater,duct Type,stationary, cataloged under National Stock Number 4520-01-226-8918, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Wellman Thermal Systems Corp. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-226-8918 |
| Primary Part Number | DHA17BL6D111 |
| Item Name | Heater,duct Type,stationary |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Wellman Thermal Systems Corp |
| Status | ACTIVE |
| Heat Delivery Rate | 25000.0 BRITISH THERMAL UNIT |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Heat Medium Type | AIR |
| Voltage in Volts | 208.0 |
| Height | 18.000 INCHES NOMINAL IN |
| Width | 8.000 INCHES NOMINAL IN |
| Mounting Type | VENTILATION DUCT |
| Heating Element Type | ELECTRIC NONIMMERSION |
| Current Rating in Amps | 8.7 |
| Operating Control Type | THERMOSTATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DHA17BL6D111 PRIMARY | Wellman Thermal Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| ST64D22-1 | 5/9 Secondary reference Lockheed Martin Corp |
NSN 4520-01-226-8918 is a Heater,duct Type,stationary, manufactured by Wellman Thermal Systems Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-226-8918 has 1 manufacturer part number on file: DHA17BL6D111 (Wellman Thermal Systems Corp).
Key specifications for DHA17BL6D111: Heat Delivery Rate: 25000.0 BRITISH THERMAL UNIT; Phase: THREE; Frequency in Hertz: 60.0; Current Type: AC. 12 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.