Brass Elegans 120H AB Solid Cast Brass Victorian 6-Inch by 12-Inch Air Return, Antique Brass Finish Model Heavy solid cast brass construction will not bend or warp Solid Brass Screws Included Durable high quality decorative finishes Outer dimensions of brass face plate are 6 1/2 inch by 13 1/8 inch fits 6 inch by 12 inch opening Can be wall- floor or ceiling mounted