What Is P-6 Shredding? Security Levels, Particle Size and When It’s Used

Not all paper shredding produces the same result.

A basic office shredder may cut documents into relatively large pieces, while higher-security destruction methods reduce paper into much smaller particles that are significantly more difficult to reconstruct.

P-6 is a very high-security paper destruction level commonly referenced under the DIN 66399 classification system. For paper, P-6 permits a maximum particle area of 10 mm², with regular particles limited to a maximum width of 1 mm.

That level of destruction may be appropriate for organizations handling particularly sensitive records, proprietary information, confidential research, government materials, or documents subject to heightened internal or contractual security requirements.

But P-6 is not automatically necessary for every business document.

The right shredding level depends on the sensitivity of the information, applicable requirements, internal policies, and the overall security process surrounding collection and destruction.

Black Ops Destruction provides secure document destruction for businesses throughout Ohio and the Midwest, helping organizations manage confidential records through controlled collection, chain of custody, and documented destruction processes.

What Does P-6 Shredding Mean?

P-6 refers to one of the higher paper-security levels used to classify how small documents must be reduced during destruction.

The "P" classification applies primarily to paper and printed information.

The levels run from P-1 through P-7. As the number increases, the maximum permitted particle size generally becomes smaller.

For paper:

  • P-4 permits particles up to 160 mm²
  • P-5 permits particles up to 30 mm²
  • P-6 permits particles up to 10 mm²
  • P-7 permits particles up to 5 mm²

P-6 therefore sits immediately below P-7, the highest paper-security level in this classification system.

The practical difference is particle size. Smaller particles make reconstructing the original document increasingly difficult.

What Is the P-6 Shred Size?

For P-6 paper destruction, the maximum particle area is 10 mm².

For regular particles, the width is limited to a maximum of 1 mm.

That is considerably smaller than the particle size permitted at P-4 or P-5.

A business comparing shredding methods should therefore look beyond labels such as "cross-cut" or "high security" and ask what destruction specification the equipment actually produces.

Two shredders can both destroy confidential paper while producing very different results.

P-4 vs. P-5 vs. P-6 vs. P-7

The simplest way to understand the difference is to compare the maximum permitted particle size.

P-4

Maximum particle area: 160 mm²

P-4 is commonly used for confidential business information and provides substantially smaller particles than basic strip-cut destruction.

P-5

Maximum particle area: 30 mm²

P-5 provides a higher level of particle reduction and may be considered for particularly sensitive information.

P-6

Maximum particle area: 10 mm²

P-6 is intended for information requiring very high protection and produces significantly smaller particles than P-5.

P-7

Maximum particle area: 5 mm²

P-7 is the highest paper-security classification in the P series and is associated with information requiring exceptionally stringent protection.

The important point is that the highest level is not automatically the correct level for every organization.

The destruction method should match the information and the requirements surrounding it.

PAPER SHREDDING SECURITY LEVELS
How Does P-6 Compare With P-4, P-5 and P-7?
Higher P-levels permit progressively smaller paper particles. The appropriate level depends on the sensitivity of the information and the requirements that apply to it.
Level Max. Particle Area Relative Protection General Consideration
P-4 160 mm² High Commonly associated with confidential business information.
P-5 30 mm² Higher May be appropriate for particularly sensitive information.
P-6 10 mm² Very High Used when information requires a very high level of physical destruction.
P-7 5 mm² Highest Intended for information requiring exceptionally stringent protection.
CHOOSE A DESTRUCTION LEVEL BASED ON
Information Sensitivity
Contract Requirements
Internal Policies
Security Risk
Bottom line: P-6 permits substantially smaller paper particles than P-4 or P-5, but the highest available security level is not automatically the right choice. Match the destruction method to the sensitivity and requirements of the information.

How Secure Is P-6 Shredding?

P-6 provides a very high level of physical paper destruction.

Its small particle size makes reconstruction considerably more difficult than lower-security methods.

But particle size is only one part of a secure destruction program.

A business should also consider what happens before the paper reaches the shredder.

That includes:

  • How documents are collected
  • Where they are stored before destruction
  • Who has access to them
  • How they are transported
  • Whether chain of custody is documented
  • How destruction is verified
  • What documentation is provided afterward

Extremely small particles do little to protect information if confidential records are left unsecured in an open box or uncontrolled storage area for weeks before destruction.

Security should be evaluated as a process, not just a shred size.

What Types of Documents May Be Appropriate for P-6 Shredding?

P-6 may be considered when an organization determines that particularly sensitive information requires stronger physical destruction.

Examples may include:

  • Sensitive research and development records
  • Proprietary technical information
  • Intellectual property
  • Confidential product designs
  • Strategic corporate materials
  • Certain government records
  • Sensitive legal or investigative files
  • High-value financial information
  • Documents subject to contractual destruction requirements
  • Records classified internally as requiring very high-security destruction

That does not mean every document in one of these categories automatically requires P-6.

A research company, for example, may classify only certain engineering or development documents at a heightened destruction level while handling routine administrative paperwork differently.

The appropriate standard should come from the sensitivity of the information and the organization's actual requirements.

Does HIPAA Require P-6 Shredding?

No specific P-6 requirement appears in the HIPAA Privacy or Security Rules. HHS guidance on disposing of protected health information explains that covered entities must apply appropriate safeguards when disposing of PHI and identifies shredding, burning, pulping, or pulverizing as examples for paper records when the information is rendered essentially unreadable, indecipherable, and not reconstructable.

The rules do not prescribe one specific DIN or P-level for all paper records. 

Healthcare organizations should therefore avoid assuming that all medical records automatically require P-6.

Instead, they should evaluate:

  • The sensitivity of the information
  • Their own policies
  • Contractual requirements
  • Applicable laws and regulations
  • The destruction process being used

If a customer, government program, contract, or internal policy specifies a particular particle size or destruction standard, that requirement should be addressed directly.

Does NAID AAA Certification Mean P-6 Shredding?

No.

NAID AAA Certification and P-6 describe different things.

P-6 describes a physical paper-destruction classification based on particle size.

NAID AAA Certification evaluates secure destruction providers against operational and security requirements and includes ongoing audits.

A NAID AAA Certified provider should not automatically be assumed to perform every paper destruction job at P-6.

If your organization requires a particular destruction level or particle-size specification, confirm that requirement with the provider before scheduling service.

Is P-6 Better Than P-5?

P-6 produces smaller allowable particles than P-5 and therefore represents a higher paper-security classification.

But "higher" does not always mean "better" for every project.

The more useful question is:

Which destruction level is appropriate for the information being destroyed?

P-5 may satisfy the security requirements for one organization, while another may require P-6 because of:

  • A contract
  • A customer requirement
  • Government specifications
  • Internal security policies
  • The sensitivity of the records
  • Risk-management standards

Selecting a higher level than necessary can add complexity without providing meaningful additional value for the particular records involved.

The goal is to match the destruction method to the risk.

Is P-6 the Highest Shredding Security Level?

No.

P-7 is the highest paper-security level in the P classification.

P-7 permits a maximum particle area of 5 mm², compared with 10 mm² for P-6.

P-7 is generally associated with information requiring the highest levels of physical protection.

Most businesses should not assume they need P-7 simply because it is the highest classification.

As with P-6, the correct level depends on the information being destroyed and the requirements governing it.

Why Shred Size Is Only One Part of Document Security

Businesses sometimes focus heavily on shred size because it is easy to measure.

But the real risk begins before destruction.

A complete document destruction program may include:

  • Records-retention policies
  • Clear authorization for destruction
  • Secure collection containers
  • Limited employee access
  • Controlled storage
  • Documented chain of custody
  • Secure transportation
  • Appropriate destruction equipment
  • Certificates or other destruction documentation
  • Responsible recycling after destruction

Destruction should also fit into the organization's broader records retention process so documents are kept for the required period and destroyed only when authorized.

If any of those steps are weak, selecting an extremely small particle size does not solve the entire problem.

For many organizations, improving collection, storage, and chain-of-custody procedures can be just as important as choosing the destruction equipment itself.

When Should a Business Consider P-6 Shredding?

Start by looking at the records rather than the shredder.

Ask:

  • How sensitive is this information?
  • What could happen if it were reconstructed or exposed?
  • Does a contract specify a destruction level?
  • Does a government customer require a particular standard?
  • Does our internal security policy specify a particle size?
  • Are different categories of documents assigned different destruction requirements?
  • Can our provider meet the required specification?
  • How will the documents remain secure before destruction?
  • What proof of destruction does our organization require?

If no specific P-6 requirement exists, the organization should determine whether that additional particle reduction is justified by the sensitivity of the information.

For routine office records, another secure destruction method may satisfy the organization's needs.

For highly sensitive material, P-6 may be appropriate when the organization's security program calls for that level of destruction.

What Should You Ask a High-Security Shredding Provider?

If your organization needs a specific security level, do not assume every professional shredding service produces the same result.

Ask:

  • What particle size does your equipment produce?
  • Can you meet a defined P-level or destruction specification?
  • Is that capability available for the type and volume of material we have?
  • How are documents secured before destruction?
  • What chain-of-custody procedures are used?
  • Where does destruction take place?
  • What documentation will we receive?
  • Can you support one-time and recurring destruction needs?
  • Can you handle multiple business locations?
  • What happens to the paper after destruction?

Businesses that want documents destroyed at their location can also consider on-site shredding as part of their document destruction program.

A provider should be able to explain both the destruction method and the process surrounding it.

High-Security Document Destruction in Ohio

Businesses may need high-security document destruction for many reasons, including confidential research, proprietary information, government work, legal records, sensitive financial documents, or internal security policies.

Those projects can range from a small quantity of highly sensitive files to large records-room purges and multi-location destruction programs.

Black Ops Destruction provides secure document destruction for organizations throughout Ohio and the Midwest, with controlled collection, chain-of-custody procedures, and documented destruction services.

If your organization has a specific particle-size requirement or security standard, confirm the exact destruction specification required before scheduling service.

Frequently Asked Questions About P-6 Shredding

What is P-6 shredding?

P-6 is a very high-security paper destruction level that permits a maximum particle area of 10 mm², with regular particles limited to a maximum width of 1 mm.

Is P-6 more secure than P-5?

P-6 permits smaller particles than P-5, so it represents a higher paper-security classification. Whether it is necessary depends on the sensitivity and requirements of the information being destroyed.

Does HIPAA require P-6 shredding?

No. HIPAA requires appropriate safeguards for disposing of protected health information but does not specify P-6 as the required destruction level for all paper PHI. 

Does NAID AAA Certification mean a company uses P-6 shredding?

No. NAID AAA Certification evaluates a provider's secure destruction processes and controls. P-6 is a separate classification describing paper particle size.

Is P-6 the highest security level?

No. P-7 is the highest level in the P classification for paper and permits a maximum particle area of 5 mm².

Who may need P-6 shredding?

Organizations handling highly sensitive research, proprietary information, certain government materials, intellectual property, or documents subject to heightened contractual or internal security requirements may consider P-6 when appropriate.

Choosing the Right Shredding Security Level

P-6 shredding provides a very high level of physical paper destruction, but selecting a shredding method should begin with the information itself.

Determine how sensitive the records are, what requirements apply, and whether a specific particle size is actually necessary.

Then evaluate the entire destruction process, including collection, storage, transportation, chain of custody, provider controls, destruction method, and documentation.

Black Ops Destruction provides secure document destruction services for businesses and organizations throughout Ohio and the Midwest.

If your organization is managing particularly sensitive records or has a specific destruction requirement, contact Black Ops Destruction to discuss the project and determine what destruction options are appropriate.

Call: 330-888-5410

Email: mmarzullo@blackopsdestruction.com

Contact: Request a Quote

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