The ELS finishing dryer can be installed on every kind box storage line. It consists of a modular structure made of metallic carpentry thermally insulated. The hot air is distributed in the tunnel in an extremely homogeneous way, through holes made in the sheets of the inside walls. The hot air, with a max. temperature up to 120° C, can be supplied by a kiln cooling chimney or by one or more air vein generators, placed on the dryer bearing crown. The hot air is delivered to the right wall and to the left wall alternatively, through automatic timing valves. In synchrony, from the opposite wall, the hot wet air is sucked.