This field report discusses the components of CLASS 10K and 100K cleanrooms, including the location of make-up, supply, and return air ducts. It also describes cleanroom grid corner locks, perforated ceiling tiles, tube bases, cable trays, panel cuts, expansion tolerances, plenums, shelves, pipes, cable trays, glass walls, expansion tolerances, framing, gaskets, hangers, primary and secondary steel, bolted connections, inserts, and ceiling grids. Locations are identified for various building elements.