The Central Laboratory for Micro- and Nanotechnology (CMNT) is a shared user facility and the central clean-room of RWTH Aachen University. Currently, CMNT is distributed over several labs in multiple institutes. The main CMNT lab (CMNT - Module 1) provides a clean-room of 509 m2 with a maximum class 5 of particulate air cleanliness (as per DIN EN ISO 14644-1) sourrounded by a grey-room of 545 m2. In the near future the other labs of the facility will be concentrated in a new building (CMNT - Module 2). Module 2 will be spatially connected to Module 1 and will provide an additional clean-room of 625 m2 (also with a maximum class 5 of particulate air cleanliness) and a grey-room of 400 m2. CMNT will then serve as the core micro-/nanotechnology facility at RWTH Aachen University.