Acuity Brands Inc. now offers its Lithonia Lighting TWH and TWP outdoor wall-mounted luminaires with LED technology. The luminaires, which are identical in size to their traditional counterparts, offer an expected service life of more than 20 years. Designed to replace up to a 400-watt metal-halide luminaire, they offer up to 77 percent energy savings with the capability of producing up to 6,700 lumens. Available in 10, 20 and 30 LED configurations, the luminaires use individual LED primary optics that allow a larger percentage of the light to be delivered to the target area.