Direct from the manufacturer and everything from a single source since 1947

We are the pioneers in shelter construction. Our services include the detailed planning and careful execution of new builds and refurbishments, conversions and renovations of shelters and civil defense facilities. The air and filter systems developed and produced in Switzerland set standards worldwide and are currently in use in over 2.5 million shelters . We know the required standards and precise tasks and speak the language of the licensing authorities. Our customers are the federal government, cantons and municipalities as well as general contractors, architects, civil defense offices, resellers and private homeowners with shelters.