DLA Aviation is conducting market research through a sources sought notice to identify companies capable of manufacturing or legitimately obtaining a specific air conditioning-heating duct assembly (NSN 1660-004212087). The item is currently manufactured by Arrowhead Products Corp. and is a source controlled item, so interested parties must contact the designated design control activity for source approval. No solicitation exists at this time, responses are voluntary, and no funds are available to cover preparation costs. No budget or performance location is specified in the notice.