Safely ship circuit boards and other sensitive electronics with two layers of defense against EMI and RFI signals. These boxes have an outer conductive layer that shields your box’s items from electrical noise outside the box, preventing malfunctioning. The inner conductive foam lining dissipates charges inside the box created by handling or movement. The foam also creates a cushion for your items. All meet ANSI/ESD standards for controlling electrostatic discharge and packaging sensitive electronic components.