  We present a renormalizable model of electroweak interactions containing an
extra $SU(2)'_L\otimes SU(2)'_R$ symmetry. The masses of the corresponding
gauge bosons and of the associated Higgs particles can be made heavy by tuning
a convenient vacuum expectation value. According to the way in which the heavy
mass limit is taken we obtain a previously considered non-linear model
(degenerate BESS) which, in this limit, decouples giving rise to the Higgsless
Standard Model (SM). Otherwise we can get a model which decouples giving the
full SM. In this paper we argue that in the second limit the decoupling holds
true also at the level of radiative corrections. Therefore the model discussed
here is not distinguishable from the SM at low energy. Of course the two models
differ deeply at higher energies.
