The TWR1 LED luminaire is powerful yet energy efficient, capable of replacing up to a 250 W metal halide luminaire while saving up to 86% in energy costs. Offering an expected service life of more than 20 yr, the TWR1 LED eliminates frequent lamp and ballast replacements associated with traditional technologies. The adjustable light output (ALO) feature allows the contractor to set the light output during installation, to a level perfectly suited for the job site. The TWR1 LED ALO luminaires can replace anything from 70 - 250 W metal halide luminaires. The TWR1 LED combines traditional wall pack design with high-output LEDs to provide an energy efficient, low maintenance LED wall pack Rugged cast-aluminum housing with bronze polyester powder paint for lasting durability Door is hinged on the side so door swings out of the way during installation and service Castings are sealed with a one-piece gasket to inhibit the entrance of external contaminants High-performance LEDs maintain up to 90% of light output at 100000 hr of service life