Technical Manual C1 (TM 3-4240-216-12) M13 20 CFM Tank Gas-Particulate
$30.00
In stock
SKU
Technical Manual C1 (TM 3-4240-216-12) M13 Tank Gas-Particulate
Toggle Nav
The #1 Online Source for Military Museum Displays • Movie Props • Training Aids • Historical Artifacts
This Technical Manual Change 1 for TM 3-4240-216-12 covers the M13 20 CFM Tank Gas-Particulate Filter Unit and is dated February 1965. For collectors of U.S. Army technical manuals, Chemical Corps material, Cold War protective equipment, and military support-system literature, this is a strong period document tied to a specialized and less commonly encountered piece of Army filtration equipment.
Because this is an official manual change, it was issued to revise and update the original TM 3-4240-216-12 dated February 11, 1963 rather than replace it outright. That is an important detail for collectors. Army manuals were routinely kept current through numbered changes, and surviving change issues help document how technical guidance, maintenance procedures, and service information evolved while the equipment remained in use. In that sense, this is not just an insert. It is part of the actual service history of the manual.
The M13 20 CFM Tank Gas-Particulate Filter Unit
The M13 belongs to the broader family of U.S. military gas-particulate filtration and collective-protection support equipment. As identified by its nomenclature, it is a 20 CFM tank gas-particulate filter unit, placing it squarely in the support side of Army chemical-defense and protected-environment operations rather than in the category of conventional weapons or vehicles.
A filter unit of this type was associated with the need to provide filtered airflow for armored or enclosed protected spaces, helping support personnel operating in environments where airborne chemical or particulate hazards were a concern. The 20 CFM rating identifies it as a compact but purpose-built filtration unit intended for military use in protected systems where clean airflow and contamination control mattered.
For collectors, that makes this manual change especially interesting because it documents the technical side of Cold War protective systems rather than more commonly seen combat equipment. It is a useful example of the Army’s broader readiness infrastructure during the chemical-defense era.
What This Manual Change Covers
As an official Change 1 to TM 3-4240-216-12, this publication would have been intended to revise and update the service information associated with the M13 20 CFM Tank Gas-Particulate Filter Unit.
In practical terms, publications like this are especially relevant for:
- updated technical guidance
- revised operating or servicing information
- corrected maintenance procedures or data
- manual-issue history and documentation
- restoration and archival reference
- collecting complete sets of original military manual changes
Because it is a Change 1 issue, it is especially useful for collectors who want to pair it with the original base manual and preserve the manual as it was actually updated and used in service.
Historical Significance
The date February 1965 places this publication in the Cold War period, when the U.S. military maintained extensive technical literature covering chemical defense, filtration, decontamination, and protected-environment support systems. Manuals and change sheets like this reflect a period when Army documentation extended far beyond weapons and vehicles to include the equipment required to help units remain operational in hazardous conditions.
For collectors and historians, this manual change is especially relevant to subjects such as:
- Cold War U.S. Army technical manuals
- Chemical Corps and protective equipment
- gas-particulate filtration systems
- collective-protection support equipment
- dated military paperwork and manual changes
Because it covers a specialized filtration unit rather than a more common vehicle or weapon system, it also adds variety to collections that already include standard ordnance or maintenance manuals.
About This Item
This listing is for Technical Manual Change 1 for TM 3-4240-216-12 covering the M13 20 CFM Tank Gas-Particulate Filter Unit, dated February 1965.
It is especially well suited for:
- U.S. Army technical manual collections
- Chemical Corps and protective-equipment displays
- Cold War military paper collections
- museum exhibits on military field support systems
- archive and research libraries focused on U.S. military technical publications
Because manuals were working documents, surviving examples are valued not only for their content, but also for their connection to real military training, maintenance, and support practice.
Why This Manual Matters
Many military manuals focus only on base editions, but change sheets are a major part of how Army documentation was actually used in service. This item adds a layer of authenticity and completeness that a base manual alone does not always provide.
For collectors, it is a useful companion piece to the original TM 3-4240-216-12. For researchers, it helps document the continued support history of the M13 20 CFM Tank Gas-Particulate Filter Unit. For museums, it adds context to the administrative and technical side of a protective system that is far less commonly documented than standard combat equipment.
Ideal For
This manual is a strong fit for:
- U.S. Army technical manual collections
- Cold War Chemical Corps displays
- filtration and protective-equipment collections
- museum and archival reference libraries
- collectors of military paperwork and dated technical publications
Approx length 10", Approx width 8", Approx height .2", Approx weight .2lbs.
Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.
Please visit our page about order lead times here: Order Lead Times