The Heater,duct Type,portable, cataloged under National Stock Number 4520-00-223-3221, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Engineered Air Systems, Inc. Dba Drs Sustainment Systems. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-223-3221 |
| Primary Part Number | BT400-40-1A |
| Item Name | Heater,duct Type,portable |
| FSC / FSG | 4520 / 45 — No Item Name Available |
| Manufacturer | Engineered Air Systems, Inc. Dba Drs Sustainment Systems |
| Status | ACTIVE |
| Surface Treatment | PAINT |
| Air Filter Type | REPLACEABLE PREFORMED |
| Radio Interference Suppression Type | ARMY, MIL-E-53301, RADIO SUPPRESSION |
| Width | 20.000 INCHES NOMINAL IN |
| Heat Outlet Quantity | 1 |
| Heat Directing Device | FLEXIBLE DUCTS |
| Fuel Feed Method | INTERNAL PUMP |
| Heat Discharge Outlet Type | STATIONARY |
| Fuel Consumption Rate Per Hour | 4.0 GALLONS |
| Heat Delivery Rate | 400000.0 BRITISH THERMAL UNIT |
| Mounting Type | TRAILER |
| Maximum Air Flow Rate | 1070.0 CUBIC FEET PER MINUTE |
| Ignition Method | ELECTRODE |
| Prime Mover Type | GASOLINE ENGINE |
| Current Type | AC |
| Circulated Air Type | HEATED |
| Speed Adjustments | SINGLE SPEED |
| Integral Fuel Tank Capacity | 16.0 GALLONS |
| Heat Medium Type | AIR |
| Current Rating in Amps | 6.0 |
| Fuel Type | GASOLINE |
| Heating Element Type | COMBUSTION CHAMBER |
| Heat Delivery Direction | HORIZONTAL |
| Phase | THREE |
| Quantity | 1 |
| Operating Control Type | HAND SWITCH |
| Height | 26.000 INCHES NOMINAL IN |
| Air Circulation Device | PROPELLER FAN |
| Inclosure Material | STEEL |
| Frequency in Hertz | 60.0 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| BT400-40-1A | Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA) |
| BT400-40-1A | Drs Environmental Systems Inc (USA) |
| MILH4607 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4520-00-223-3221 is a Heater,duct Type,portable, manufactured by Engineered Air Systems, Inc. Dba Drs Sustainment Systems, classified under FSC 4520 (No Item Name Available). Status: active.
NSN 4520-00-223-3221 has 3 cross-referenced part numbers: BT400-40-1A (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), BT400-40-1A (Drs Environmental Systems Inc), MILH4607 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 5 known substitutes for 4520-00-223-3221: 4520-00-054-4716, 4520-00-203-0224, 4520-00-915-7789 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for BT400-40-1A: Surface Treatment: PAINT; Air Filter Type: REPLACEABLE PREFORMED; Radio Interference Suppression Type: ARMY, MIL-E-53301, RADIO SUPPRESSION; Width: 20.000 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.