This notice is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included in this notice. So... This notice is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included in this notice. Solicitation number 80GRC026R0011 is being issued as a Request for Proposal (RFP) for Glenn Research Center (GRC) Special Test Equipment (STE) for one (1) Custom Thermal Vacuum Chamber (rectangular shaped), one (1) Thermal Shroud, and one (1) Thermal Conditioning Unit (TCU).