The government seeks competitive quotations for a firm-fixed-price purchase order for 70 Support Sensing Elements (NSN 1560-01-182-0346, P/N 51481-101) manufactured by OEM Kidde Graviner LTD (CAGE K1536). This is an unrestricted commercial-item RFQ under NAICS 336413, with a small-business size standard of 1,250 employees, and all responsible sources may submit a quotation. Offerors must provide clear, auditable traceability to the OEM, documentation showing they are a Kidde-authorized distributor, and a Certificate of Conformance per FAR 52.246-15. No drawings, specifications, or schematics are available from the USCG. Only F.O.B. Destination or F.O.B. Origin shipping terms will be accepted—Ex Works and Incoterms 2020 terms are not acceptable—and email quotations are preferred.