What are the dimensions for a Trex fence post?

Our Trex posts are built for durability and strength. The outside dimension is 5"x5" with an inside dimension of 3 3/4" x 3 3/4". The thickness of the Trex post is 5/8'', giving it the strength to be a stand-alone post despite the fact that it is hollow. Our posts come in 3 lengths: 8', 9', and 12'. Posts can be cut to various heights similar to lumber. Our Architectural Drawings are a great resource for all things related to dimensions. Individual components as well as fence sections are listed. 

To put things in perspective, check out how the thickness of a Trex post compares to a vinyl post. Yikes!