Stanford University - Telecommunications Design Guidelines

Wall-mounted TSO outlet: install a dual gang extension ring (1/2” or 5/8”) and pull line. Wall-Phone TSO outlet: install a single gang extension ring (1/2” or 5/8”) and pull line. In metal stud construction, a 1 and 1/16” diameter orange grommet shall be installed in the top metal wall plate. ................
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