Faraday EMP Bag - 8"x8" Dimensions: 8" x 8", 38-pound puncture resistance Total Thickness: 7.0 mils, Light Transmission (ASTM D-1003-77) &lt;.01% EMI Shielding (MIL-B-81705-Rev-C): &gt;40 db Between 1 & 10 GHz Resistivity-Conductive Metal Layer (ASTM D-257): &lt;2 Ohms/sq. in. avg Surface Resistivity (both surfaces) (ASTM I-257 @ 12% RH): &lt;10 12 Ohms. sq. in