Hart & Cooley by Duravent Return Air Grille, Series: 672, 30 in W x 30 in H, 29-1/2 in Duct Width, 29-29/32 in Duct Height, 31-3/4 in Overall Length, 31-3/4 in Overall Width, 621 sq-in, 40 deg Deflection, 1/2 in Blade Spacing, Steel, Bright White Enamel, Domestic,