Watertight junction boxes for tunnels,with the following characteristics: protection rating IP 65 self-extinguishing high heat stability and high resistance to normal heat insulation against accidental contacts high dielectric characteristics high mechanical strength high resistance to chemical and atmospheric agents and fire rated with functional integrity  E90, i.e. guaranteed circuit integrity with temperatures 980°C upto 90 minutes. Complete with clamps & fixing arrangement.(For lights) testing -din 4102 , BS 6387 EN 20200