The Heater,space,electric, cataloged under National Stock Number 4520-01-278-8626, 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 Valad Electric Heating Corp.. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-278-8626 |
| Primary Part Number | 20641-3 |
| Item Name | Heater,space,electric |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Valad Electric Heating Corp. |
| Status | ACTIVE |
| Speed Adjustments | SINGLE SPEED |
| Heat Delivery Rate | 3412.0 BRITISH THERMAL UNIT |
| Phase | THREE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Inclosure Material | STEEL |
| Quantity | 1 |
| Voltage in Volts | 440.0 |
| Heat Outlet Quantity | 1 |
| Heat Discharge Outlet Type | STATIONARY |
| Heat Delivery Direction | HORIZONTAL AND VERTICAL |
| Height | 13.250 INCHES NOMINAL IN |
| Air Circulation Device | BLOWER WHEEL |
| Depth | 9.000 INCHES NOMINAL IN |
| Width | 9.000 INCHES NOMINAL IN |
| Prime Mover Type | ELECTRIC MOTOR |
| Circulated Air Type | HEATED |
| Heat Directing Device | FIXED LOUVER |
| Mounting Type | CEILING SUSPENDED |
| Heating Element Type | ELECTRIC NONIMMERSION |
| Current Rating in Amps | 2.3 |
| Operating Control Type | HAND SWITCH |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4520-01-278-8626 is a Heater,space,electric, manufactured by Valad Electric Heating Corp., classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-278-8626 has 2 manufacturer part numbers on file: 20641-3 (Valad Electric Heating Corp.), 77-0923-6 (Valad Electric Heating Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4520-01-279-1445. Verify interchangeability with system specifications before substitution.
Key specifications for 20641-3: Speed Adjustments: SINGLE SPEED; Heat Delivery Rate: 3412.0 BRITISH THERMAL UNIT; Phase: THREE; Frequency in Hertz: 60.0. 22 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.