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DIN 66399 Security Levels Explained: P-1 to P-7

Document Security /

If you’ve seen P-3, P-4, or P-5 on a paper shredder and wondered what those numbers actually mean, you’re looking at the shredder’s paper-security classification under DIN 66399. The basic rule is simple: the higher the P-level, the smaller the permitted paper particles. P-1 allows much larger pieces than P-7, which requires particles no larger

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