A screening module for a screening assembly includes a substantially rectangular, planar screening member having a plurality of screening apertures extending through it the member having a pair of sides extending parallel to a direction of flow of material over the member and a pair of sides extending transverse to a direction of flow of material over the member. A mounting means is formed integrally with the screening member as a one-piece unit for securing the member to an underlying structure. A part of the mounting means is arranged along each side of the screening member and only the parts of the mounting means associated with one pair of sides having reinforcing with the parts of the mounting means associated with the other pair of sides being without reinforcing.