Below you will find an explanation of the shredding industries DIN Security Levels
DIN: Deutsches Institut fr Normung e.V. (DIN; in English, the German Institute for Standardization) is the German national organization for standardization and is that country's ISO member body.
Level 1 Low Security waste reduction (DIN 1)
Machines shred into long strips up to 12mm or about 1/2 inch in width. Useful for general waste reduction for non sensitive documents
Security Level 1 Paper Shredders
Level 2 For shredding internal documents (DIN 2)
Long strips between 4mm and 6mm in width. For all internal home or small office information that is not considered sensitive
Security Level 2 Paper Shredders
Level 3 For shredding confidential documents (DIN 3)
For all Confidential documents including Staff personnel details, Company secrets, sales and marketing plans etc. Strips under 2mm or in Cross-Cut Particles 4mm x 40mm
Strip or Cross Cut
Security Level 3 Paper Shredders
Level 4 Commercially Sensitive (DIN 4)
For shredding of secret documents. Machines supplied to UK Government installation specifically state a maximum Cross Cut size of Maximum 60sq. mm. Secret documents may include those which may jeopardise personal or institutional safety if they were to fall into the wrong hands.
Security Level 4 Paper Shredders
Level 5 Top Secret or Classified (DIN 5)
Machines will shred to a maximum Cross Cut particle a size of 20sq. mm: i.e. 1mm wide x 15mm long = 15sq.mm. These products are specifically supplied to Government/Military installations where documents must be shredded to avoid espionage and where information may undermine State defence. Approved by the U.S. Department of Defence and the Canadian R.C.M.P. for top secret shredding.
Security Level 5 Paper Shredders
Level 6 Top Secret or Classified
The latest security level backed by the U.S. government. Ultra secure shredding for the most sensitive documents. Cross Cut 1mm x 5mm (approximately 1/26" x 1/5")
Security Level 6 Paper Shredders