This solicitation seeks quotes from small businesses for the purchase and installation of one Sound Transmission Class (STC) 50-rated door assembly at Wright-Patterson AFB, Ohio. Performance is located at Bldg. 10271, Room 187, 2721 Sacramento St., Wright Patterson AFB, Ohio, with delivery and installation to be completed within 90 days after receipt of order. The acquisition is a 100% small business set-aside under NAICS 561621 (Security Systems Services) with a $25M size standard. Offerors must register in SAM, hold quotes firm for 60 days, submit a completed required information sheet, include descriptive details of their product/service with pricing, and demonstrate compliance with CMMC Level 1 requirements through self-certification of the 15 FCI safeguarding requirements in SPRS/PIEE. A site visit at the performance location is available, limited to two visitors per vendor, with visitor pass requests required in advance.