The Defense Logistics Agency, under the Department of Defense, is seeking quotes for the procurement of four units of DUCT, BLEED AIR, identified by NSN 1560004221789. This solicitation is a source-controlled drawing item, and the approved source for this procurement is 70628 12989-102A, indicating the necessity for compliance with specific military specifications and standards. The items are critical components used in aerospace applications, emphasizing their importance in maintaining operational readiness and safety. Interested vendors must submit their quotes electronically, as hard copies will not be available, and any inquiries should be directed to the buyer via the provided email address, DibbsBSM@dla.mil. The delivery is expected at DLA Distribution Warner Robins within 148 days after order placement.