. _:vb50772383 _:vb50772382 . . _:vb50772383 . _:vb50772384 . _:vb50767579 . _:vb50767579 . _:vb50767579 . . _:vb50772382 _:vb50772384 . "Assembly consisting of sections containing a fan or fans and other necessary equipment to perform one or more of the following functions: circulating, filtration, heating, cooling, heat recovery, humidifying, dehumidifying, and mixing of air. Is usually connected to an air-distribution system."@en . _:vb50771722 . _:vb50771722 . . _:vb50772382 _:vb50767579 . _:vb50772384 _:vb50771722 . "AHU" . . _:vb50767579 . _:vb50771722 . _:vb50771722 .