This is a brand-name-or-equal procurement for 200 sheets of NSN 5640013713262, an insulation block, thermal. The item must comply with MIL-DTL-24688 Revision A Amendment 1 dated June 28, 2022, and QPL-24688; no qualified sources currently exist on the referenced QPL, but supplied items must still conform to the specification. Required salient characteristics include Type II faced panel, Class 1 fibrous glass cloth faced, open-cell polyimide foam, with nominal dimensions of 36.0 inches long, 24.0 inches wide, and 2.0 inches thick. Product conformance must meet these characteristics, the producer’s own specifications, standards, and quality assurance practices, and be the same product offered commercially, with the Government reserving the right to require proof. To be considered valid, quotes must include both the completed RFQ document and MIL-STD-129R returned by email.