The TWR2 LED ALO is a versatile and energy efficient LED wall pack for replacing anything from 150 - 400 W metal halide wall packs, while saving up to 82% in energy costs. Offering an expected service life of 20 yr, the TWR2 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 best suited for the job site. The TWR2 LED combines traditional wall pack design with energy efficient, low maintenance LED technology The traditional shape helps maintain building aesthetics when replacing only a portion of your building's wall packs 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