The Mariner DLX16-RM downlight is the longest production luminaire in our product line. Continual upgrades over its 25-year history ensure the Mariner is always at the top of its game. The DLX16 Features a thermally conductive Copper core that reduces internal temperature, ensuring peak performance and increased lamp life when using LED lamps. As always, aggressively priced, Made in the USA, and backed by a Lifetime Warranty.