The Cooler Unit,air, cataloged under National Stock Number 4130-01-503-7409, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) 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. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4130-01-503-7409 |
| Primary Part Number | H790RP-E |
| Item Name | Cooler Unit,air |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| Status | ACTIVE |
| Nominal Capacity in Btu Per Hour | 45560.0 COOLING AND 45560.0 HEATING |
| Return Connection Size | 1.0 IN. OD IN |
| Phase | THREE FAN MOTOR |
| Phase | THREE HEATER |
| Frequency in Hertz | 60.0 FAN MOTOR |
| Frequency in Hertz | 60.0 HEATER |
| Case with Built-in Condensate Drain Pan | INCLUDED |
| Current Type | AC FAN MOTOR |
| Current Type | AC HEATER |
| Heater Wattage Rating in Kilowatts | 9.0 |
| Connection Type | FLANGE UNION |
| Voltage in Volts | 440.0 HEATER |
| Voltage in Volts | 440.0 FAN MOTOR |
| Prime Mover Horsepower Rating | 0.333 |
| Operating Speed at Rated Capacity in RPM | 1800.0 |
| Tube Circuit Quantity | 32 |
| Material | STEEL CASE |
| Material | COPPER TUBE |
| Coil Tube Quantity | 1 |
| Supply Connection Size | 1.0 IN. OD IN |
| Cooling Medium | CHILLED WATER |
| 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 |
|---|---|
| H790RP-E PRIMARY | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| Reference | Meaning |
|---|---|
| 1337D00 | 7/1 Vendor item drawing reference Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
NSN 4130-01-503-7409 is a Cooler Unit,air, manufactured by Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-01-503-7409 has 1 manufacturer part number on file: H790RP-E (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
5 possible matches (shared part number, not a government interchangeability claim): 4130-01-503-7418, 4130-01-505-1247, 4130-01-505-1248. Verify interchangeability with system specifications before substitution.
Key specifications for H790RP-E: Nominal Capacity in Btu Per Hour: 45560.0 COOLING AND 45560.0 HEATING; Return Connection Size: 1.0 IN. OD IN; Overall Height: 52.000 INCHES NOMINAL IN; Phase: THREE FAN MOTOR. 21 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.