This subcontract is for the acquisition, fabrication, assembly, testing, delivery, and installation of a specialized air handling unit to feed conditioned air into a cryostat system. The work involves connecting the unit to the cryostat via custom duct adapters and designated power panels provided by the client. All services and installation will be performed at the 4850 level underground of the Sanford Underground Research Facility (SURF) in Lead, South Dakota, for the LBNF/DUNE Far Detector and Cryogenics subproject.