PartsTable TECHNICAL DATA SHEET

NSN 4520-01-446-1369Government record, cited

Mullion Heater Free4520-01-446-1369

NSN 4520-01-446-1369 · NIIN 014461369 · Part number L1HR126

Cospolich Inc. · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 66682

Government record, cited

NSN 4520-01-446-1369 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-446-1369. Manufacturer of record part number: L1HR126.

Also searched as 4520-01-446-1369 · 4520014461369 · NIIN 014461369 · 01-446-1369 · FSC 4520 Space and Water Heating Equipment · CAGE 66682 · L1HR126

Nearby stock numbers ← 4520-01-445-9385 Heating Element, Electrical, Nonim · 4520-01-446-1685 →

Features

Mullion Heater Free — FSC 4520
1 manufacturer part number on file
Manufacturer of record: Cospolich Inc.

Identification

NSN: 4520-01-446-1369
NIIN: 014461369
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: L1HR126
Manufacturer: Cospolich Inc.

General Description

The Mullion Heater Free, cataloged under National Stock Number 4520-01-446-1369, 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 Cospolich Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Mullion Heater Free
FSC / FSG	4520 — Space and Water Heating Equipment (FSG 45)
Manufacturers	Cospolich Inc. (CAGE 66682)

Technical Specifications

Parameter	Value
NSN	4520-01-446-1369
Primary Part Number	L1HR126
Item Name	Mullion Heater Free
FSC / FSG	4520 / 45 — Space and Water Heating Equipment
Manufacturer	Cospolich Inc.
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
L1HR126 PRIMARY	Cospolich Inc. (USA)

No interchangeability data on file.

Other items in FSC 4520 — Space and Water Heating Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4520-00-000-0098

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-000-0099

4520-00-000-0099 · Item name not on file

4520-00-001-1240

4520-00-001-1240 · Item name not on file

4520-00-001-3518

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-3519

HEATING ELEMENT,ELECTRICAL,IMMER

4520-00-001-6052

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-6298

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-7726

HEATER,DUCT TYPE,PORTABLE

Frequently Asked Questions

What is NSN 4520-01-446-1369?

NSN 4520-01-446-1369 is a Mullion Heater Free, manufactured by Cospolich Inc., classified under FSC 4520, Space and Water Heating Equipment. Status: active.

What part numbers are listed for NSN 4520-01-446-1369?

NSN 4520-01-446-1369 has 1 manufacturer part number on file: L1HR126 (Cospolich Inc.).

Is NSN 4520-01-446-1369 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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