Blue Ribbon BCJ4000 Junction/Splice BoxBlue Ribbon BCJ4000 Junction Box Description Use a BCJ4000 to save on overall usage and installation costs. Accepts the Blue Ribbon Lighting Surge suppression module. Reduces replacement transmitter cost by reducing overall cable length required. Blue Ribbon BCJ4000 Junction Box Typical Applications Intended for making waterproof corrosion resistant connections Accepts Blue Ribbon lightning surge suppression module Blue Ribbon BCJ4000 Junction Box