This is a restricted USCG requirement anticipated as a firm-fixed-price sole-source purchase order to MHD Rockland Inc. for two filter cartridges, with an option for up to four additional units at the same price exercisable within one year after award. Quoters must provide clear OEM traceability to Air Liquide Advanced Technologies and documentation showing authorized distributor status, along with a Certificate of Conformance. No drawings, specifications, or schematics are available from the USCG. Quotations must use FOB Destination or FOB Origin shipping terms; EXW and Incoterms 2020 shipping terms will not be accepted.