multiple dwelling units, demarcation enclosures, environmental controlled enclosures, backhaul 12ru, ground, wall, pole mount, and OTN cabinets - I've seen them in plastic, steel, stainless steel, aluminum and other materials. any enclosure that integrates wiring, electronic components, or is under the umbrella of the six sigma quality standards is a pain when you don't have proper driver to open the cabinet. lately been working on campus residential networks and video solutions in higher education. I would have to say that this tool set saved us more than once.