Two way female Co Ax (TV/FM/DAB) socket surface plate in off white.
This is a two in two out plate, i.e. it is NOT diplexed.
Non-isolated so as to pass 12V to a Mast Head amp (if required).
As can be seen from the picture (above right) it is screened. The screening can may require the use of a deeper pattress box or spacer plate (sold here).
See article on surface plates.
Occasionally (very occasionally) an alternative plate of equivalent quality may be substituted.