Home -> Miscellaneous Wall Housing for MC602 or MC702 Master Intercom Our Price $79.95 Buy item(s) This is the required rough-in kit for the MC602 and MC702 Master Intercom. Use for prewiring to insure proper location and final mounting. Fits between 16" On Center Studs. Includes direct wire transformer and AM/FM Antennas. Related Items Worth Considering Master Music Intercom by M&S Systems Buy item(s)