Use cases  
* Buisiness , official  buildings and Luxe houses
* suitable for height to 4m roof.
*  Instal location in roof and in decorative kind into false – roof tile  
 Abilities
* Air – distribution in 1 side , 1 side , 2 side corner, 3 side, 4 side
* Made of Alominium profil.
*Possible to use of dampers for Ventilation .
* suitable for air – distribution for making – air system.
* Medium pressure  decreasing.
*usable in air – traffic
*Possible to make flat hank and open – cycle hank