Service Description They are air passages and ducts that distribute air in the necessary quantities to the spaces to be air-conditioned and circulate it within them in a way that ensures its arrival to these spaces. Most of them are made from galvanized steel sheets, which are resistant to corrosion and rust, and also because of their strength and ease of shaping. They are also made from aluminum and steel, but for limited applications. The sheet metal is formed and the ducts and accessories are designed at Nafal Air Conditioning Factory under the supervision of experienced engineers, according to the dimensions shown in the design drawings, which were prepared in advance by the studies department, and according to the dimensions and thicknesses indicated in the applicable international codes ( SMACNA ), which is the International Association of Sheet Metal and Air Conditioning Contractors.
