The Terminal,ventilation Duct, cataloged under National Stock Number 4520-01-511-7410, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-511-7410 |
| Item Name | Terminal,ventilation Duct |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Width | 1.760 INCHES IN |
| Material | ALUMINUM ALLOY |
| Diameter | 24.420 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 120921-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4520-01-511-7410 is a Terminal,ventilation Duct, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-01-511-7410: Width: 1.760 INCHES IN; Special Features: EXPANSION JOINT, FLEXIBLE FOR TURBINE INLET; 36 HOLES (.18"DIA) EQUALLY SPACED, 21.38" DIA (ID); End Item Identification: MK105 MOD4, MAGNETIC MINESWEEPING SYSTEM; MK105 MOD4, POWER PACK ASSEMBLY; Material: ALUMINUM ALLOY. 3 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.