... special order are available6)2 gang box are used as surface mounting control box , junction box or general service box7 ... process of construction ,electrical equipment , components12)PVC 2 gang box are used as surface mounting ,control box , switch box or ... general service box sizes: 86x86x45 surface box ,pvc material, 100pcs/outer packing , one gand box sizes: 86x86x33cm ...