The Damper,flue, cataloged under National Stock Number 4520-01-541-8771, 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 Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-541-8771 |
| Primary Part Number | 24-017-023 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| Status | ACTIVE |
| Material | ALUMINUM |
| 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 |
|---|---|
| 1406C0000 FN 1 | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| 24-017-023 PRIMARY | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
NSN 4520-01-541-8771 is a Damper,flue, manufactured by Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-541-8771 has 2 manufacturer part numbers on file: 1406C0000 FN 1 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil), 24-017-023 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
Key specifications for 24-017-023: Part Name Assigned by Controlling Agency: DAMPER, INLET; End Item Identification: PCU, .50 TON, LH, R-134A UNIT ASSEMBLY (THAW ROOM) A; Material: ALUMINUM. 1 specification is 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.