Hart & Cooley® Return Air Grille, Series: 672, 8 in W x 6 in H, 7-1/2 in Duct Width, 5-29/32 in Duct Height, 9-3/4 in Overall Width, 5/16 in Overall Depth, 67 to 134 cfm, 0.22 sq-ft, 40 deg Deflection, 1/2 in Blade Spacing, Steel, Bright White Enamel, Domestic