all kinds of wall box ,flushing box , sizes: 3"x3" ,3 ... , 2 gang box , 1 gang box,flushing box,wall box2) sizes: 3"x3",3"x6"box, 20mm ... insulation property,good fire-resistant3)Installation during the process of constuction ,electrical equipment ,components4)Easy to equipment ,long ... cable from easy damage11) Installation during the process of construction ,electrical equipment , components12)PVC 2 gang ...