This passthrough style jack mounts into a industry standard panel mount cutout or 15/16"" diameter hole. Great for building custom patchbays." "This passthrough style jack mounts into a industry standard panel mount cutout or 15/16"" diameter hole. Great for building custom patchbays." This passthrough style jack mounts into a industry standard panel mount cutout or 15/16" diameter hole. Great for building custom patchbays.