All Nystrom extinguisher cabinet boxes are constructed from heavy-duty, cold-rolled steel for durability, and powder-coated with an electrostatically applied, thermally-fused, recoatable white polyester finish. Door material is determined by the series and/or model number selected and tempered safety glass is used whenever glass is specified.

Wall Mounting Options

Fire Classifications

Type of Fire	Wood, Paper, Cloth, Trash, and Other Ordinary Combustibles	Flammable Liquids	Energized Electric Equipment
Class Symbol
Class Picture
ABC Dry Chemical Multi-Purpose	Yes	Yes	Yes
Water	Yes	No	No
Foam (FFFP)	Yes	Yes	No
BC Dry Chemical	No	Yes	Yes
Dry Chemical Purple K	No	Yes	Yes
Carbon Dioxide	No	Yes	Yes
Halotron 1	Yes	Yes	Yes

Principles of Selecting Extinguishers

• Type of potential fire hazard
• Severity of potential fire hazard
• Environmental conditions of potential fire hazard
• Effectiveness of extinguisher on potential fire hazard
• Training and physical capabilities of available personnel to operate extinguisher
• Upkeep and maintenance requirements of extinguisher

Extinguishing Agents

ABC Dry Chemical: Multi-purpose - an effective agent in extinguishing class A, B, and C fires. The agen base is ammonium phosphate.

Halotraon 1 - is EPA rated as a 'Clean Agent' HydroChloorFluoroCarbon, discharged as a rapidly evaporating liquid, which leaves no residue. It effectively extinguishes class A, B, and C fires by cooling and smothering and will not conduct electricity back to the user.

Water - is an effective agent in extinguishing class A fires.

FFFP: Foam - is an effective agent in extinguishing class A and B fires. Superior to water in wetting and penetration.

BC Dry Chemical - is an effective agent in extinguishing class B and C fires. The agent base is sodium bicarbonate.

Dry Chemical: Purple K - is an effective agent in extinguishing class B and C fires. It is more effective than conventional agents. The agent base is potassium bicarbonate.

Carbon Dioxide - is an effective agent in extinguishing class B and C fires. It will neither contaminate nor leave residue on materials which it extinguishes.

Consensus Standards, Requirements, Codes and Laws

The placement of fire extinguishers and fire extinguisher cabinets is driven by a group of con-sen-sus standards, requirements, codes and laws. Ultimately, where, how many, and what type, will be determined by the authority having jurisdiction for that location. The authority could be as diverse as the City Building Inspector or the Deputy Chief of Staff for Installations and Logistics.

The requirements that establish placement practice are ultimately found in local fire prevention codes at one end of the spectrum or Federal Law at the other end.

For the proper location, type and number of fire extinguishers, consult with the local authority having jurisdiction. As a general guideline, we offer the following excerpt from Occupational Safety and Health Administration - Sub Part L and from National Consensus documents:

Americans with Disabilities Act of 1990 - Protruding Objects

The majority of fire extinguishers, when hung on a wall, protrude more than 4" into walks, halls, corridors, passageways or aisles. To comply with the Americans with Disabilities Act of 1990 (ADA), objects protruding from walls (fire extinguishers) with their leading edges between 27 in. and 80 in. above the finished floor, shall protrude no more than 4" into walks, halls, corridors, passageways or aisles. Therefore, fire extinguishers that protrude more than 4" must be recessed into the wall.

Nystrom fire extinguisher cabinets allow the specifier to comply with the ADA protrusion requirements, which are identified in each dimensional table found in this catalog. Please note the column headed ADA Compliance to specify the appropriate fire extinguisher cabinet.

Fire Extinguisher Size and Placement Criteria (per NFPA 10)
Class A Hazards

Fire Extinguisher Size and Placement Criteria (per NFPA 10)
Class B Hazards

Fire Extinguisher Size and Placement Criteria (per NFPA 10)
Class C Hazards

Class C ratings are required where energized electrical equipment is encountered. Since fire itself is a Class A or B hazard, the extinguishers are sized and located on the basis of the Class A or B hazard.

Installation of Fire Extinguishers

Portable fire extinguishers shall be securely installed on the hangers or in the bracket supplied or placed in cabinets or wall recesses. Wheeled-type extinguishers shall be in a designated location.

Extinguishers having a gross weight not exceeding 40 lbs. shall be installed so that the top of the extinguisher is not more than 5’ above the floor.

Extinguishers having a gross weight greater than 40 lbs. shall be installed so that the top of the extinguisher is not more than 3’6" above the floor.