Abstract: A structural element (10). The inventive structural element (10) includes a frame (12) comprised of a plurality of studs (40) arranged in two rows, a first row (40A) disposed along a first side of the frame (12) and a second row (40B) disposed along a second side of the frame (12), and a foam core (18) disposed within the frame (12) between the first and second rows of studs (40). In an preferred embodiment, the studs (40) each include an exterior face (52), at least one interior face (54), at least one hollow interior cell (70), and at least one opening (74) through an interior face (54) adapted to provide access to a cell (70), and the foam (18) is adapted to fill the interior of the frame (12), penetrating within the hollow cells (70) of the studs (40) through the interior face openings (74).