Hart & Cooley® Return Air Grille, Series: 672, 12 x 12 in, 11-1/2 in Duct Width, 11-29/32 in Duct Height, 13-3/4 in Overall Length, 13-3/4 in Overall Width, Effective Area: 97 sq-in, 40 deg Deflection, 1/2 in Blade Spacing, Steel, Bright White Enamel