Hart & Cooley by Duravent Return Air Grille, Series: 672, 24 in W x 16 in H, 23-1/2 in Duct Width, 15-29/32 in Duct Height, 17-3/4 in Overall Length, 25-3/4 in Overall Width, 40 deg Deflection, 1/2 in Blade Spacing, Steel, Bright White Enamel, Domestic,