Shred A Large Number OF Documents AT Once - The 450C auto feed paper shredder can shred 450 sheets automatically and manually shred 13 sheets of 70gsm paper per pass into 4 x 38mm cross-cut particles (High Security DIN P-4), so you can be sure that your confidential documents have been shredded securely. Long Runtime - The 450C will shred non-stop for up to 45 minutes before requiring a 30 minute cool down period, meeting the demand for high capacity shredding in large office environments. Disruption-Free Shredding - The 450C ensures disruption-free shredding with the Sleep Mode feature which will cause the machine to switch to standby mode after periods of inactivity as well as the Auto-Reverse feature that stops the shredder and reverses the paper to prevent jams from occurring. Secure Shredding - The 450C features a Smart Lock system, which allows the user to lock the shredder with a 4-digit PIN to prevent access to confidential documents whilst shredding is in progress.