Hart & Cooley® Return Air Floor Grille, Heavy Duty, Series: 265, 12 in W x 14 in H, 13-15/16 in Duct Width, 11-7/8 in Duct Height, 13-13/16 in Overall Length, 15-13/16 in Overall Width, 131 sq-in, 1/2 in Blade Spacing, Steel, Golden Sand Enamel, Domestic