A screen panel assembly (300, 400), comprising: a screen panel (302, 402); and one or more raised screen components (320, 420) disposed on said screen panel (302, 402), each of said one or more raised screen components (320, 420) comprising: an inclined screen surface (322, 422) that defines a first plane that is oriented at a first angle relative to said screen panel (302, 402), and characterised in that said inclined screen surface (322, 422) has a front edge that is substantially perpendicular to a longitudinal axis (301, 401) of said screen panel (302, 402), wherein said first plane is substantially perpendicular to a displacement vector (312, 412) along which said screen panel assembly (300, 400) is accelerated by a vibratory separation device; side panels (306, 406); and a frame (303, 403) adapted to support the inclined screen surface (322, 422) and the side panels (306, 406), the frame having: a first edge (307, 407) that is aligned with a top surface of said screen panel (302, 402); and second edges, each of which extends upward from the top surface of the screen panel to a third edge, wherein the third edges angle upward to an upper point; or second edges that angle upward to an upper point; wherein the frame (304, 404) extends downward from the upper point (303u, 403u) to the screen panel (302, 402) to form a wedge surface (310, 410) that is positioned at a back side of said raised screen component (320, 420), wherein said wedge surface (310, 410) is adapted to disrupt a flow path of a flow of a material mixture flowing in a longitudinal direction (318, 418) across said screen panel (302, 402) by redirecting said flow around opposing sides of said raised screen component (320, 420). a screen panel (302, 402); and one or more raised screen components (320, 420) disposed on said screen panel (302, 402), each of said one or more raised screen components (320, 420) comprising: an inclined screen surface (322, 422) that defines a first plane that is oriented at a first angle relative to said screen panel (302, 402), and characterised in that said inclined screen surface (322, 422) has a front edge that is substantially perpendicular to a longitudinal axis (301, 401) of said screen panel (302, 402), wherein said first plane is substantially perpendicular to a displacement vector (312, 412) along which said screen panel assembly (300, 400) is accelerated by a vibratory separation device; side panels (306, 406); and a frame (303, 403) adapted to support the inclined screen surface (322, 422) and the side panels (306, 406), the frame having: a first edge (307, 407) that is aligned with a top surface of said screen panel (302, 402); and second edges, each of which extends upward from the top surface of the screen panel to a third edge, wherein the third edges angle upward to an upper point; or second edges that angle upward to an upper point; an inclined screen surface (322, 422) that defines a first plane that is oriented at a first angle relative to said screen panel (302, 402), and characterised in that said inclined screen surface (322, 422) has a front edge that is substantially perpendicular to a longitudinal axis (301, 401) of said screen panel (302, 402), wherein said first plane is substantially perpendicular to a displacement vector (312, 412) along which said screen panel assembly (300, 400) is accelerated by a vibratory separation device; side panels (306, 406); and a frame (303, 403) adapted to support the inclined screen surface (322, 422) and the side panels (306, 406), the frame having: a first edge (307, 407) that is aligned with a top surface of said screen panel (302, 402); and second edges, each of which extends upward from the top surface of the screen panel to a third edge, wherein the third edges angle upward to an upper point; or second edges that angle upward to an upper point; a first edge (307, 407) that is aligned with a top surface of said screen panel (302, 402); and second edges, each of which extends upward from the top surface of the screen panel to a third edge, wherein the third edges angle upward to an upper point; or second edges that angle upward to an upper point;