Protektive Pak 37451 Foam, Static Dissipative, 1/4 X 9-3/4 X 16-3/4 inProtektive Pak 37451 Foam, Static Dissipative, 1 4 X 9 3 4 X 16 3 4 in Permanently static dissipative crosslink bottom foam to cushion circuit boards For use with the Protektive Pak ESD in Plant Handler and Storage Containers Non contaminating, non corrosive, and non sloughing Static dissipative surface resistance of 1 x 106 to < 1 x 109 ohms per ANSI ESD STM11. 11 1. 9 lb ft density Made in the United States of America Black Cushion Grade Static