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  Regular Price: $3,201.00 Sale Price: $2,103.00 |  |  Regular Price: $5,144.00 Sale Price: $3,605.00 | |  Regular Price: $11,549.00 Sale Price: $8,654.00 |
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 Shredders range in size and price from small and inexpensive units meant for a few pages, to large units used by commercial shredding services that cost hundreds of thousands of dollars and can shred millions of documents an hour. Some shredders used by a commercial shredding service are built into a shredding truck.
The normal small shredder is an electrically powered device, but there are unpowered ones such as special scissors with multiple blade pair and shredders which are hand-cranked.
These machines are classified according to the size and shape of the shreds they produce. (As a practical matter, this is also a measure of the degree of randomness or entropy they generate.) Shredders can range in size from standard scissors and other hand-operated devices all the way up to truck-sized shredders. There are also shredder selector sites that can help consumers choose a shredder that is appropriate for their needs. Micro-cut or Particle-cut shredders create tiny square or circular pieces. There are numerous standards for the security levels of paper shredders, including:
DIN 32757 [5]
Level 1 = 12 mm strips OR 11 x 40mm particles
Level 2 = 6 mm strips OR 8 x 40mm particles
Level 3 = 2 mm strips OR 4 x 30mm particles (Confidential)
Level 4 = 2 x 15 mm particles (Commercially Sensitive)
Level 5 = 0.8 x 12 mm particles (Top Secret or Classified)
Level 6 = 0.8 x 4 mm particles (Top Secret or Classified) (unofficial extension of the DIN 32757-1 standard) All Destroyit micro-cut shredders exceed level 6 shredding
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