When security is not the issue, post and rail may be the barrier option you select. There are many types of post and rail fences available in the fence industry. Typically, post and rail fences come in 2 or 3 rails, but they can be ordered with as many rails as desired. Post and rail fence are mostly wood, ranging from split rail cedar, lodge pole pine, and dimensional lumber, but can also be P.V.C in Denver.