Junction Box Included. Sunco's ultra slim downlight comes with a junction box which requires only a 2-inch clearance of ceiling space. This allows for hassle-free install. No can required for install of recessed light. J-box included. Image shows the LED downlight in a ceiling with a cutaway to view the spring clips in place and the twist wire connecting the j-box to the LED wafer thin downlight. Select from 2700K Soft White, 3000K Warm White, 3500K Warm White, 4000K Cool White, 5000K Daylight.