Post and Rail fencing has a wonderful warm country feel to its appearance and offers an airiness for homeowners who want a fence but don't want to be overwhelmed with the feeling of being "fenced in."   Post and Rail styles are available in wood and PVC/Vinyl.

Fence heights are 3' high (2-rails), 4' high (3-rails), 5' high (4-rails)
 
You can add wire to your 4' or 5' high post and rail fence to make it pool code compliant.