The Government is assessing the availability and technical capability of small and large businesses to provide two new, fully functional Large Diameter Flex Duct Bellows Assemblies for the Arnold Engineering Development Complex at Arnold AFB, Tennessee. The contractor must furnish all materials, labor, equipment, delivery, and transportation and safely deliver the assemblies. Refurbished or remanufactured parts are not authorized. The assemblies must meet the technical requirements in Attachment 1 – Specification for Large Diameter Flex Duct Bellows.