The Neco top rail supported by natural aluminum is a piece that has a length of 2.35 m made of aluminum with a natural aluminum finish. The Neco top rail has a“ T ”shape which makes one of its sides have a height of 52 mm, while on the opposite side its height reaches 56 mm due to the fact that it includes a support flange, the total width is 32 mm. The Neco trolleys for sliding doors, as well as the Soft Neco set for sliding doors, are installed on the rail of this series. The packaging of the Neco top rail is 8 units.