North American Bullet Proof incorporates these stainless steel deal trays into NATL Series Tellers Lines and all Series transaction windows. We also are please to sell these units individually. The MDT Series is a mortised unit that requires a counter top cutout. The MDT-NR is also a recessed deal tray that has a non ricochet feature. A level 3 bullet resistant liner is available. In areas where a cutout is not practical, the ST surface mounted unit is ideal. Although North American Bullet Proof offers these units in standard sizes, custom sizes also available.