The Halo Recessed H36RTAT is a Non IC AIR TITE remodel fixture for use with H3 3 Inch 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 areas. for use with 120 Volt GU10 lamps. Non IC Housing is AIR TITE but insulation must be kept 3 Inch away from all sides of housing.