The Decora Brush Passthrough Insert offers a clean, professional appearance when cable needs to pass through a wall opening. The white fibers of the brush protect the cables and close the opening to provide an aesthetically pleasing look. The brush insert installs on standard NEMA electrical boxes and low-voltage brackets. Single or multi-gang Leviton Decora wallplates (sold separately) complete the installation. Use for home theater, classroom, or conference room audiovisual installations.