Original replacement floor heating registers. Molded thermoplastic construction won't rust or fade and has solid color throughout so it will not peel or flake. Rounded corners for safety and extra wide flange will hide any area left by previous registers. Meets or exceeds H.U.D. and R.V.I.A. specifications. Cutout Dimension: 9-7/8" x 2-1/4". Outside Dimension: 11-7/8" x 4-1/4".