A structural member reinforcement includes a body portion having a plurality of side walls. The side walls are spaced to define an opening therebetween. A plurality of cells are disposed in the opening between the side walls. Each of the plurality of cells defines a channel. An expandable material, such as structural foam or noise vibration and harshness (NVH) foam, is disposed in the channel of at least one of the plurality of cells. The reinforcement may be used to reinforce a structural member, such as a vehicle frame. The structural member may define a cavity, and the reinforcement may be disposed within the cavity.