The National Institute of Standards and Technology (NIST) is seeking qualified firms for Portable Restroom Rental & Maintenance Services at its Gaithersburg, MD campus. The contract would include a 1-year base period with four 1-year options and a possible extension of up to six months. Responses to this sources sought notice must be received by June 5, 2026. No budget amount is specified in the description. This is a market research notice only, not a solicitation.