The DAHLE CleanTEC® 41534 High Security Shredder is a Security Level P-7 machine that is NSA/CSS 02-01 approved and supports the top-secret shredding needs of military and government agencies. It produces cleaner air by filtering up to 98% of harmful fine dust particles and includes an automatic EvenFlow Lubricator® to ensure optimal performance. The DAHLE CleanTEC® 4153 paper shredder delivers a cross cut shred size of 1mm x 4.7mm, and is able to reduce a single sheet of letter size paper into over 15,500 tiny particles.  Equipped with ESP (Electronic Sensing Protection), the CleanTEC 41534 won’t allow sheet capacity to be exceeded, as it senses how much paper you’re trying to shred.