Post Cap Lights from Trex fit directly onto Trex 4X4 Composite Post Sleeves. Their warm white glow points downward for easier wayfinding and beautiful ambience. And like most Trex products, Trex Post Cap Lights are manufactured in the USA. They beautifully match with the rest of Trex Deck Lighting, as well as our high-performance line of composite decking and railing, and can be quickly installed with the Trex LightHub connection system.