The Damper,ventilation, cataloged under National Stock Number 4140-01-537-5760, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Greenheck Fan Corporation Dba Greenheck Fan Corp. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-537-5760 |
| Primary Part Number | VCD-23 16X6IN/ML4302/AE-249 |
| Item Name | Damper,ventilation |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Greenheck Fan Corporation Dba Greenheck Fan Corp |
| Status | ACTIVE |
| Surface Treatment | ZINC |
| Material | STEEL |
| 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 |
|---|---|
| VCD-23 16X6IN/ML4320/AE-249 | Vyron Corporation (USA) |
| VCD-23 16X6IN/ML4302/AE-249 PRIMARY | Greenheck Fan Corporation Dba Greenheck Fan Corp (USA) |
| Reference | Meaning |
|---|---|
| VCD-23 16X6IN/ML4320/AE-249 | 5/9 Secondary reference Greenheck Fan Corporation Dba Greenheck Fan Corp |
NSN 4140-01-537-5760 is a Damper,ventilation, manufactured by Greenheck Fan Corporation Dba Greenheck Fan Corp, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-537-5760 has 2 manufacturer part numbers on file: VCD-23 16X6IN/ML4320/AE-249 (Vyron Corporation), VCD-23 16X6IN/ML4302/AE-249 (Greenheck Fan Corporation Dba Greenheck Fan Corp).
Key specifications for VCD-23 16X6IN/ML4302/AE-249: Overall Length: 16.000 INCHES NOMINAL IN; Overall Width: 6.000 INCHES NOMINAL IN; Special Features: MADE OF 16 GAGE GALVANIZED STEEL; INCLUDES ACTUATOR; Surface Treatment: ZINC. 2 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.