  The recently found non-BPS multi-wall configurations in the N=1 supergravity
in four dimensions is shown to have no tachyonic scalar fluctuations without
additional stabilization mechanisms. Mass of radion (lightest massive
fluctuation) is found to be proportional to $Lambda {\rm e}^{-\pi\Lambda R/2}$,
where $\Lambda $ is the inverse width of the wall and $ R$ is the radius of
compactified dimension. We obtain localized massless graviton and gravitino
forming a supermultiplet with respect to the Killing spinor. The relation
between the bulk energy density and the boundary energy density (cosmological
constants) is an automatic consequence of the field equation and Einstein
equation. In the limit of vanishing gravitational coupling, the Nambu-Goldstone
modes are reproduced.
