This Heavy-duty steel frame is anchored to your MC200 change machine cabinet with security bolts. It provides added security by protecting the seams around the door, the T-handle lock and the acceptor. It can be secured with either padlock or combination locks. Made of 7 gauge steel and finished in silver gray powder-coat paint. To make it work, the appropriate Bill Acceptor Security Plate must also be ordered, according to the brand of Bill Acceptor you have chosen for your machine.