Lithonia lighting elm2l m12 contemporary led emergency unit w/adjustable optics, thermoplastic the elm2l from lithonia lighting is an aesthetically pleasing emergency led light fixture. It provides a minimum of 90 minutes of illumination when there is a loss of power. Unique track and swivel arrangement permits full range of direction for lamp head aiming for wall and ceiling mount applications mounting heights range from 7.5′ to 10′, making installation easy while maintaining the maximum path of egress coverage. The linear pattern provides wide uniform distributions that deliver broad spacing up to 33′ and low max to min ratios that far exceed code requirements.