This sources sought notice is for market research to identify suppliers capable of manufacturing the SOURCE CONTROLLED NSN 1660-00-221-1176, a DUCT ASSEMBLY, AIR C, with the applicable NAICS code 336413. The estimated requirement covers a 5-year base period, and the approved source is Arrowhead Products (CAGE 70628), though other interested parties must submit a Source Approval Request (SAR) package for approval. Responses must be submitted by 07/02/2026 via email to CHRISTOPHER.ROSE@DLA.MIL. No budget information or location for performance of services is specified in the description. Based on responses, the procurement may be set aside for small businesses or proceed through full and open competition.