  The quest for new realizations of higher-order topological system has
garnered much recent attention. In this work, we propose a paradigmatic brick
lattice model where corner modes requires protection by nonsymmorphic symmetry
in addition to two commuting mirror symmetries. Unlike the well-known square
corner mode lattice, it has an odd number of occupied bands, which necessitates
a different definition for the $\mathbb Z_2\times \mathbb Z_2$ topological
invariant. By studying both the quadrupolar polarization and effective edge
model, our study culminates in a phase diagram containing two distinct
topological regimes. Our brick lattice corner modes can be realized in a RLC
circuit setup and detected via collossal "topolectrical" resonances.
