Abstract: An electrical outlet cover for enclosing an electrical outlet wall box which has enhanced stiffness and prevention of corner bending and/or twisting while employing a minimum amount of material for a maximum stiffness. It comprises a generally rectangular plate having electrical plug passages and upper and lower linear arrays of cored, rectangular stiffening ribs projecting outwardly from the back surface of the plate and positioned along each of an upper and a lower edge of the plate. It further has left and right linear arrays of cored, rectangular stiffening ribs positioned between the electrical plug passages and left and right edges of the plate which extend from the upper linear array to the lower linear array. A central linear array of stiffening ribs project are positioned between the electrical plug passages and extend from the left linear array to the right linear array. A reinforced opening for receiving a screw extend through the plate at the midpoint of the central linear array.