A luminaire includes a fixture to be generally received in a recess of a support surface. A plurality of light engines are disposed within the fixture. The light engines each have at least one light source. A heat flange disposed about a distal end region of said fixture. The heat flange having a hollow, generally frustum shape with a cross-section extending generally radially outwardly beyond said fixture and extending away from said distal end region of said fixture. The hollow shape provides a flange cavity for housing of driver or other components for the light engines.