Hart & Cooley® Return Air Grille, Series: 672, 20 in W x 16 in H, 19-1/2 in Duct Width, 15-29/32 in Duct Height, 21-3/4 in Overall Width, 5/16 in Overall Depth, 40 deg Deflection, 1/2 in Blade Spacing, Steel, Bright White Enamel, Domestic