Trex Seclusions posts and related products provide support for Trex fence systems and gates. Shop for the various Trex Seclusions fence post components here. Seclusions posts can also be used for other applications such as the Horizonshorizontal fence system, ornamental iron or aluminum fencing, even as an upgrade for wood fences. No rust, no rot and no twisting, splitting, splintering! Trex posts do not require internal support for fences up to 8ft tall. Post stiffeners are available for gates and taller fence configurations.