Half metal Distribution box, ABS cover + iron back; The cover is with night light, convenient is works in gloomy environment; It has recessed type and outside type for option Material: ABS cover+ ABS back Specification: 1-4units/ 2-4 units/ 4-6 units/ 7-9 units/ 10-13 units/ 14-16 units characteristic: can be combinated freely type: recessed type/ surface type Advantage: adjustatble inside bar