Abstract: Thrust reverser cascade including: spars each extending along a longitudinal direction and a direction, called height, and spaced from each other along a transverse direction, each spar including two large opposite faces, blade assemblies each extending transversely between two spars facing each other and spaced from each other along the longitudinal direction, each large face of each spar includes, between two consecutive blade assemblies, two sub-surfaces longitudinally offset and forming together, in a plane, an angle less than 90°, the two sub-surfaces being connected to each other by a third sub-surface which has, in a plane, a triangular shape with an apex in the low part of the spar and a base in the top part and which is longitudinally offset relative to the apex.