The Air Conditioner, cataloged under National Stock Number 4120-01-644-9933, is classified within Federal Supply Class 4120 (Air Conditioning Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Air Conditioner |
| FSC / FSG | 4120 — Air Conditioning Equipment (FSG 41) |
| Manufacturers | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (CAGE 38450) |
| Parameter | Value |
|---|---|
| NSN | 4120-01-644-9933 |
| Primary Part Number | 1745C0000/1745-CD-01 ITEM K.12 |
| Item Name | Air Conditioner |
| FSC / FSG | 4120 / 41 — Air Conditioning Equipment |
| Manufacturer | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| Status | ACTIVE |
| 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 |
|---|---|
| 1745C0000/1745-CD-01 ITEM K.12 PRIMARY | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| Reference | Meaning |
|---|---|
| FCU-H5-2.0KW-LH-LVR | 5/1 Secondary reference Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| 1745-CD-01 | D/9 Drawing number reference only Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
NSN 4120-01-644-9933 is a Air Conditioner, manufactured by Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil, classified under FSC 4120, Air Conditioning Equipment. Status: active.
NSN 4120-01-644-9933 has 1 manufacturer part number on file: 1745C0000/1745-CD-01 ITEM K.12 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
2 possible matches (shared part number, not a government interchangeability claim): 4120-01-644-9977, 4120-01-645-2281. Verify interchangeability with system specifications before substitution.
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.