With these ESD containers you can protect your electronic components from the typical electromagnetic interference (EMI), electrostatic or induced fields. To prevent the build up of an electrostatic charge these containers are made with a conductive barrier in mind to keep these fields from penetrating. With these containers you will have the ability to customize your box into compartments at 1-1/8" intervals and snap covers protect from dust or damage. They have a weight capacity of 100 pounds. Be sure all units are properly grounded according to your use.