halo 4 inch white round surface mount retofit kit, suitable for installation in many 3-1/2" and 4" square, octagon, and round electrical junction boxes. 4" round surface mount downlight 120v. 2700k, 3000k, 3500k, 4000k or 5000k field selectable cct; 90 cri, wet and damp location listed, airtight per astm-e283