The Heater,duct Type,stationary, cataloged under National Stock Number 4520-01-331-3549, 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 Indeeco Llc Dba Indeeco. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-331-3549 |
| Primary Part Number | A21000 A00621-2.5KW |
| Item Name | Heater,duct Type,stationary |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Indeeco Llc Dba Indeeco |
| Status | ACTIVE |
| Heat Delivery Rate | 8530.0 BRITISH THERMAL UNIT |
| Current Type | AC |
| Heat Medium Type | AIR |
| Heating Element Type | ELECTRIC NONIMMERSION |
| 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 |
|---|---|
| A21000 A00621-2.5KW PRIMARY | Indeeco Llc Dba Indeeco (USA) |
| Reference | Meaning |
|---|---|
| A21000:A00621-2 .5KW | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4520-01-331-3549 is a Heater,duct Type,stationary, manufactured by Indeeco Llc Dba Indeeco, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-331-3549 has 1 manufacturer part number on file: A21000 A00621-2.5KW (Indeeco Llc Dba Indeeco).
Key specifications for A21000 A00621-2.5KW: Heat Delivery Rate: 8530.0 BRITISH THERMAL UNIT; Current Type: AC; Heat Medium Type: AIR; Heating Element Type: ELECTRIC NONIMMERSION. 4 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.