  We have computed the contribution to the observables of the final two fermion
channel at LEP2, at the limiting energy $\sqrt{q^2}=200 GeV$, coming from boxes
with two neutralinos of purely gaugino type, of mass $M=100 GeV$. We find a
potentially visible effect only for the muon channel, in the cross section and,
to a lesser extent, in the forward-backward asymmetry. Analogous effects coming
from the chargino box are also briefly discussed.
