Protect your electronic components from typical electromagnetic interference (EMI), electrostatic or induced fields with these molded, carbon-filled, copolymer polypropylene dividable grid containers. Surface resistivity is less than 105 Ohms-per square. The conductive material provides a barrier which these fields cannot penetrate and prevents the build up of electrostatic charge. Containers, dividers and covers are permanently conductive and are unaffected by washing with normal cleaners. Containers have a load capacity of 100 lbs. Dividers available to customize your box into compartments at 1-1/8” intervals and snap covers provide contents from dust or damage. Be sure all units are properly grounded according to your use. Color is Black.