HDT Expeditionary Systems Inc. (HDT), Solon, Ohio (N00178-19-D-4503); and Design West Technologies (DWT),* Tustin, California (N00178-19-D-4504), are each awarded multiple award indefinite-delivery/indefinite-quantity contracts with firm-fixed-pricing arrangements for the procurement of M98 gas particulate filter sets. The maximum ceiling dollar value for both contracts combined is a possible $78,565,403. The two contractors may compete for task orders under the terms and conditions of the awarded contracts. Work will be performed in Solon, Ohio, for the filters manufactured by HDT and Tustin, California, for the filters manufactured by DWT, and is expected to be complete by March 2024. Fiscal 2019 operations and maintenance (Navy) funding in the amount of $1,605 for HDT and 2019 operations and maintenance (Navy) $1300 for DWT will be obligated at time of award and will expire at the end of the current fiscal year. In accordance with 10 U.S. Code 2304, these contracts were competitively procured via the Federal Business Opportunities website, with two offers received. The Naval Surface Warfare Center, Dahlgren Division, Dahlgren Virginia, is the contracting activity (N00178-18-R-5005).