The Naval Surface Warfare Center Dahlgren Division intends to procure three CI Systems absolute extended area blackbodies—20-inch, 10-inch, and 8-inch—with thermoelectric coolers as one-to-one replacements for existing laboratory hardware. These thermal reference standards are needed to calibrate imager assemblies and ensure accurate sensor data, with highly calibrated data as a primary deliverable. The requirement is a firm-fixed-price simplified acquisition awarded on a lowest price technically acceptable basis, and quotes will only be accepted from the OEM or authorized resellers/distributors with OEM authorization documentation. All costs, including shipping/freight to Dahlgren, VA 22448-5114 and any tariffs or duties, must be included in the quoted price as separate line items (taxes excluded), with no additional costs allowed after award. Anticipated award is by December 2027.