The United States Coast Guard requires five units of a specific return air fan (NSN 4140-22-633-5300, part number CNA-250/D) for its 154' WPC ventilation systems, with delivery F.O.B. destination to Baltimore, MD by May 30, 2026. The sole U.S. distributor for the manufacturer is Russ Equipment, meaning all other vendors must purchase through them. Each item must be individually preserved and packaged per strict military standards (MIL-STD-2073-1E Method 10) in approved wooden or fiberboard boxes, with barcoding per ISO/IEC-16388-2007. This is a total small business set-aside under NAICS 333413, and all responsible sources must be registered in SAM and submit quotes via email. Offerors must include a completed FAR 52.212-3 representation and certification with their quote.