Abstract: A device for the protection of wiring and cabling installed prior to the hanging of drywall or other construction or remodel efforts. The device is comprised essentially of at least one wall, a recess, and fastener holes that correspond to the fastener holes on standard old and new work boxes, ceiling boxes, or circuit breaker boxes. The recess and walls in concert form a solid perimeter of a volume, the solid perimeter preventing the intrusion of dust, paint, adhesives, drywall, and tools, as well as other common construction elements, into installed boxes. The solid protective device also prevents the inadvertent cutting or other damage to wiring and cables installed prior to the hanging and cutting of drywall. The device may include a door to allow access to elements while still providing protection from passive intrusion.