Acquisition method (AMC)
1
FSC 4520 × HEATER,VENTILATION,DUCT TYPE
HEATER,VENTILATION,DUCT TYPE
4520-00-132-5603 FSC 4520
NSN 4520-00-132-5603 (also written 4520001325603; NIIN 00-132-5603) is a heater, ventilation, duct type in Federal Supply Class 4520, Space and Water Heating Equipment. 6 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Sep 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
T
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC T: handled under qualified products list procedures. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| HEAT DELIVERY DIRECTION ABAX | HORIZONTAL |
| HEAT OUTLET QUANTITY ABAW | 1 |
| DUCT WIDTH ABAU | INCHES 14.000 |
| DUCT HEIGHT ABAT | INCHES 6.250 |
| HEAT MEDIUM TYPE ABAM | HOT WATER OR STEAM |
| MAXIMUM PRESSURE LIMIT ABAN | POUNDS PER SQUARE INCH GAGE 35.0 |
| MOUNTING TYPE AAXX | VENTILATION DUCT |
| SURFACE TREATMENT SFTT | ZINC |
| SPECIAL FEATURES FEAT | CONFORMS TO MIL-H-16235C,TUBE HAS 60 FINS PER FT. MIL-H-16235C |
| HEIGHT HGTH | INCHES NOMINAL 9.250 |
| INCLOSURE MATERIAL CQSJ | STEEL |
| HEATING ELEMENT TYPE BDXJ | HOT WATER COIL OR STEAM COIL |
| DEPTH AEJZ | INCHES NOMINAL 5.000 |
| HEAT DISCHARGE OUTLET TYPE ABAY | STATIONARY |
| HEAT DIRECTING DEVICE ABAZ | RADIAL DIFFUSER-VERTICAL VANES |
| WIDTH ABGL | INCHES NOMINAL 21.750 |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| NSTDS25M | 41197 | MODINE MFG CO |
| S25M | 38450 | ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL |
| S25M | 87103 | EDGE ELECTRONICS CORPORATION DBA MC INTYRE COIL |
| S3802-66970-25M | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| S3802-66970S25M | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| S3802-66970S25M, TYPE 1 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
—
Purchases
0
Total spend
—
Sep 16, 2026
Last purchased
1 · 1.0/yr
Purchase records
$20,531
Total demand
$20,531
Latest award total
Purchase history
No priced purchases on record for this NSN yet.
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Sep 16, 2026 | SPE8E826P1494 ↗ | ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL | — | $20,531 |
Demand history
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL
last award Sep 2026
EDGE ELECTRONICS CORPORATION DBA MC INTYRE COIL
no award yet
no awards on record
Listed source MODINE MFG CO
no award yet
no awards on record
Listed source NAVAL SHIP SYSTEMS COMMAND
no award yet
no awards on record
Listed source ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL won the only award on record.
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 20, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-20.
- Full methodology →
Cite this page
Citation
NSN Explorer. "HEATER,VENTILATION,DUCT TYPE." nsnexplorer.com, https://nsnexplorer.com/nsn/4520-00-132-5603/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4520-00-132-5603/