Signals for neutralino box effects at LEP2

We have computed the contribution to the observables of the final two fermion channel at LEP2, at the limiting energy q2=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.