Hart & Cooley by Duravent Return Air Grille, Series: 672, 12 in W x 24 in H, 11-1/2 in Duct Width, 23-29/32 in Duct Height, 25-3/4 in Overall Length, 13-3/4 in Overall Width, 40 deg Deflection, 1/2 in Blade Spacing, Steel, Bright White Enamel, Domestic,