The Electrical Box Extender lends support to the contents of a wall box.
Levels and supports wiring devices in an electrical boxHelps prevent arcing by forming a barrier between a metal box and metal side screws on the deviceHeavy-duty, non-conductive plastic constructionUL and CSA safety listingsComplies with 2008 NEC Article 314.Electrical Box Extender This non-conductive extender helps prevent arcing by forming a barrier between the box and the metal screws on the device.20.