The Heater,ventilation,duct Type, cataloged under National Stock Number 4520-01-154-2441, 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 Hoyt Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4520-01-154-2441 |
| Primary Part Number | 1698-C-2 |
| Item Name | Heater,ventilation,duct Type |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Hoyt Corporation |
| Status | ACTIVE |
| Heat Medium Type | HOT WATER OR STEAM |
| Inclosure Material | ALUMINUM AND COPPER |
| Heat Outlet Quantity | 1 |
| Heat Discharge Outlet Type | STATIONARY |
| Heat Delivery Direction | HORIZONTAL OR VERTICAL |
| Height | 8.000 INCHES NOMINAL IN |
| Depth | 5.125 INCHES NOMINAL IN |
| Width | 24.000 INCHES NOMINAL IN |
| Mounting Type | VENTILATION DUCT |
| Heating Element Type | HOT WATER COIL OR STEAM COIL |
| 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 |
|---|---|
| 1698-C-2 PRIMARY | Hoyt Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1698-C | D/9 Drawing number reference only Hoyt Corporation |
| 69-769 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4520-01-154-2441 is a Heater,ventilation,duct Type, manufactured by Hoyt Corporation, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-154-2441 has 1 manufacturer part number on file: 1698-C-2 (Hoyt Corporation).
1 possible match (shared part number, not a government interchangeability claim): 2805-01-432-0299. Verify interchangeability with system specifications before substitution.
Key specifications for 1698-C-2: Heat Medium Type: HOT WATER OR STEAM; Inclosure Material: ALUMINUM AND COPPER; Heat Outlet Quantity: 1; Heat Discharge Outlet Type: STATIONARY. 10 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.