The H1499T75 is a small aperture low voltage housing for providing accent and task lighting with up to 75W 12V MR16 lamps. The H1499T75 is designed for use in non-insulated ceilings. The H1499T75 features a dual-tap transformer for 120V or 277V input. H1499T75 is for non-insulated ceilings. If installed in insulated ceilings, insulation must be kept 3 inches away from all sides of housing.