The Department of Defense, through the Washington Headquarters Services (WHS), is seeking sources for the procurement of Sound Transmission Class (STC) doors and assemblies hardware. This opportunity aims to acquire specialized metal window and door manufacturing products that meet specific sound transmission requirements, which are critical for maintaining operational security and privacy in various defense facilities. Interested vendors should note that the primary contact for this opportunity is Melvina Mcneill, who can be reached at melvina.l.mcneill.civ@mail.mil or 703-545-9496, with a secondary contact available as Akiba Muldrow at akiba.t.muldrow.civ@mail.mil or 703-362-9831. This is a Sources Sought notice, and interested parties are encouraged to respond promptly to ensure consideration.