AZEK Plateau Top Post Caps offer moisture-resistant, long-lasting durability that adds beauty to your outdoor project. AZEK post caps look like wood but are made from innovative synthetic decking products that are low maintenance and last much longer. They resist mold, mildew, stains, scratches and fading. Even better, destructive insects don’t like them. AZEK Plateau Top Post Caps come with long warranties, and they won’t rot, split, twist or warp.