Basic fans in the Bvn ventilation device industry are duct type fans with different names such as radial duct fan, duct aspirator, pipe aspirator and egg type fan. Fans are used to clean the air in the environment by applying inside the duct. They are divided into two classes as duct type radial fans and duct type axial fans. In the subgroups of these classes, there are round duct type radial fans coded by the manufacturers such as YKA, BDTX, LKT, VENT, TKF, CK, round duct type axial fans coded…
