NuTone Central Vacuum E-Box for CI399 Electra-Valve II Inlets

For applications where the installer is marrying an old style rough-in kit (CI395RK) with a new ElectraValve II wall inlet (CI399W or CI399ALM). In this situation, the old-style plug will have to be cut off at the valve and the E-box connector installed to fit with the new wall valve. Original CI390 Electra-Valve inlets are not compatible with the new Electra-Valve II Rough-In Kit (CI399RK).