2" x 4" x 96" S4S treated deck rail can be used as a top or bottom rail. The ProWood micro treatment produces a more natural look, as is less corrosive to fasteners than other wood treatments. Actual size is: 1-1/4" H. x 3-1/4" W. Dimensions: 1-3/8" wide upper plough. 1/2" overall plough depth. 1" left and right hips. 1-3/4" top. Filets not included.