1.junction box(without cable glands)
sizes:80×50,85×85×50,100×100×70,150×110×70,200×100×70,200×100×110,200×155×80,
200×200×80,255×200×80
2.junction box(with cable glands)
sizes:50×30,50×50,80×50,80×80×50,85×85×50,100×100×70,150×110×70,150×150×70,
200×155×80,200×100×70,200×200×80,255×200×80,300×250×120,400×350×120.
