Pine pickets with two rails are the most popular fence option for track home builders. This construction method uses a top-and-bottom treated 2×4 to span between a 4×4 post. Pickets are left without support in the middle. A 2×4 will be added between the posts to upgrade to a 3 rail fence. The picket will have more support and strength in three places than it does in 2. A bottom rot board, which prevents water/moisture from traveling vertically up pickets, will also extend the fence’s life. A treated 2×6′ board is placed horizontally at the fence’s base to act as a rot board. Because the grain is horizontal, it cannot travel either vertically or up. Potential customers will always be recommended a 3 rail, bottom-rot board fence by Humble Fence Company.