The H36LVRTAT277 is a Non-IC AIR-TITE™ fixture for use with H3 3” series trims. For installation from below the ceiling. Housing is AIR-TITE rated to prevent airflow between heated or air conditioned spaces and unconditioned attic/plenum areas. H36LVRTAT277 features integral 120/277 dualtap transformer. For use with 12V MR16 lamps. Designed for installation in 120 or 277V electrical systems. Non-IC Housing is AIR-TITE™ but insulation must be kept 3 inches away from all sides of housing.