# NSN 4520-00-132-5603: Heater, Ventilation, Duct Type

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.

## Identification

- NSN: 4520-00-132-5603 (4520001325603)
- NIIN: 00-132-5603 (001325603)
- Item name: HEATER,VENTILATION,DUCT TYPE
- Federal Supply Class: [FSC 4520 Space and Water Heating Equipment](https://nsnexplorer.com/fsc/4520/)
- Federal Supply Group: [FSG 45](https://nsnexplorer.com/group/45/)
- Acquisition method suffix code: AMSC T: handled under qualified products list procedures. (observed 2026-10-20)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABAX | HEAT DELIVERY DIRECTION | HORIZONTAL |
| ABAW | HEAT OUTLET QUANTITY | 1 |
| ABAU | DUCT WIDTH | INCHES 14.000 |
| ABAT | DUCT HEIGHT | INCHES 6.250 |
| ABAM | HEAT MEDIUM TYPE | HOT WATER OR STEAM |
| ABAN | MAXIMUM PRESSURE LIMIT | POUNDS PER SQUARE INCH GAGE 35.0 |
| AAXX | MOUNTING TYPE | VENTILATION DUCT |
| SFTT | SURFACE TREATMENT | ZINC |
| FEAT | SPECIAL FEATURES | CONFORMS TO MIL-H-16235C,TUBE HAS 60 FINS PER FT. |
| HGTH | HEIGHT | INCHES NOMINAL 9.250 |
| CQSJ | INCLOSURE MATERIAL | STEEL |
| BDXJ | HEATING ELEMENT TYPE | HOT WATER COIL OR STEAM COIL |
| AEJZ | DEPTH | INCHES NOMINAL 5.000 |
| ABAY | HEAT DISCHARGE OUTLET TYPE | STATIONARY |
| ABAZ | HEAT DIRECTING DEVICE | RADIAL DIFFUSER-VERTICAL VANES |
| ABGL | WIDTH | INCHES NOMINAL 21.750 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| NSTDS25M | 41197 | MODINE MFG CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S25M | 38450 | ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S25M | 87103 | EDGE ELECTRONICS CORPORATION DBA MC INTYRE COIL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S3802-66970-25M | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S3802-66970S25M | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S3802-66970S25M, TYPE 1 | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-16 | [SPE8E826P1494](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520001325603) | HEATER, VENTILATION, | ENGINEERED COIL COMPANY DBA ENGINEERED COIL CO DIV DRS MARLO COIL | $20,531.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520001325603&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520001325603
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4520-00-132-5603/
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