The Heater,ventilation,duct Type, cataloged under National Stock Number 4520-01-421-1666, 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 Indeeco Llc Dba Indeeco. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-421-1666 |
| Primary Part Number | L210T0 B12983-D-0 TAG 59,68 |
| Item Name | Heater,ventilation,duct Type |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Indeeco Llc Dba Indeeco |
| Status | ACTIVE |
| Heat Medium Type | AIR |
| Duct Height | 6.000 INCHES IN |
| Duct Width | 12.000 INCHES IN |
| Heating Element Type | ELECTRIC NONIMMERSION |
| 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 |
|---|---|
| L210T0 B12983-D-0 EL-77091 TAG56 | Indeeco Llc Dba Indeeco (USA) |
| L210T0 B12983-D-0 TAG 59,68 PRIMARY | Indeeco Llc Dba Indeeco (USA) |
| Reference | Meaning |
|---|---|
| L210T0:B12983-D -0 EL-77091 TAG | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| TFZU-2.00-12-6-440/3/1/24-RH | C/1 Advisory reference — outside the item-of-supply concept Indeeco Llc Dba Indeeco |
NSN 4520-01-421-1666 is a Heater,ventilation,duct Type, manufactured by Indeeco Llc Dba Indeeco, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-421-1666 has 2 manufacturer part numbers on file: L210T0 B12983-D-0 EL-77091 TAG56 (Indeeco Llc Dba Indeeco), L210T0 B12983-D-0 TAG 59,68 (Indeeco Llc Dba Indeeco).
Key specifications for L210T0 B12983-D-0 TAG 59,68: Heat Medium Type: AIR; Duct Height: 6.000 INCHES IN; Duct Width: 12.000 INCHES IN; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 4 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.