Up for Sale is 1 pair (2) of NEON High Voltage Heat Resistant #300 Ceramic Housings by Transco. An Affordable and Safe way of making Neon Electrode Connections in Raceways or Exposed Neon Sign Applications. Spring contact allows for easy Neon tube serving. Rated for 7,500v or 15,000v mid-point grounded transformer installation. Size measures 3 1/2" high, 1 3/4" panel hole and 1 1/8" Electrode opening. Great for Repair or Refurbishing an Old Sign where a larger electrode opening allows for more Neon adjustment.