Wiring duct is typically used to route and protect wires within a control panel or machine. Often made of PVC, wiring duct consists of a base with sidewalls and a removable cover. Other materials are available for special applications. Sidewalls can be solid or consist of “fingers” or holes enabling wires to exit or enter the duct at any point. Various widths and heights of duct are available depending on the number and size of the wires that are routed within the duct.