Service Description They are air passages and ducts that distribute the required amount of air to the areas to be conditioned, ensuring it reaches those spaces efficiently. Most of them are made from galvanized steel sheets that are corrosion and rust-resistant, as well as being strong and easy to shape. They are also made from aluminum and stainless steel, but these materials are used for specific applications. The steel sheets are formed, and the air ducts and their accessories are designed in Boroda for Air Conditioning under the supervision of experienced engineers, according to the dimensions specified in the design plans previously prepared by the studies department. These are made to the measurements and thicknesses specified by the global standards (SMACNA), which is the international association of sheet metal contractors and HVAC professionals.