Brass Elegans 116H CH Solid Cast Brass Contemporary 6-Inch by 12-Inch Air Return, Chrome 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