54" Aluminum Fence. Superior Product Design with a heavy contoured rail that has extruded ribbing that adds strength to your fence. Each rail has three points of contact with its pickets. This unique design creates a strong bond that eliminates sagging, twisting, and cupping. Rails have no run lines or seams to accumulate water or debris, so fences resist mold and mildew. Picket points are smoothed over and sealed to provide safety for children and pets. Long-Lasting Components.