CONDUCTIVE GRID BOXES Multi-ribbed external sides provide high impact strength to these injection molded carbon filled copolymer polyethylene grid boxes. Conductive grid boxes protect sensitive electronic components from typical electromagnetic interference. Electrostatic Decay Rate is tested to meet Mil Spec Mil-B-81075B at less than 0.1 seconds. Surface resistivity is less than 105Ohms/Sq when tested per ASTM-D257. Use for storage or shipping, they stack securely with or without an optional lid. Sold in carton quantities. Available in Black only.