Steel; 1.500 in. W, 1.625 in. Lg, center hole 0.500 in. Dia, two mtg holes 0.218 in. Diameter located 0.125 in. From each side of the valve; t-shape, metal piece attached to valve 0.875 in. W, 1.750 in. Lg; rubber gasket 1.531 in. Lg, 0.750 in. W, w/three equally spaced holes