Potrubie prívodu vzduchu

         _     ____   __        __  ____         
   ___  | |_  | __ )  \ \      / / / ___|    ___ 
  / _ \ | __| |  _ \   \ \ /\ / /  \___ \   / __|
 |  __/ | |_  | |_) |   \ V  V /    ___) | | (__ 
  \___|  \__| |____/     \_/\_/    |____/   \___|