Installation of Security Doors
Research Institute
Installation of Security Doors
Atomic power plant
OL3 - Olkiluoto
Installation of Security Doors
Wind power
WeserWind GmbH
About us
More than 10 years experience...

4- MONT is a specialized installation-company within the STAHL s.r.o. Group. The scope of supply and services was extended to engineering services, welding services and special installation services for steel structures and special doors. With experience of installation of security doors, security grids and bomb blast resistant facades on nuclear, military and business projects in Germany, France, Finland, Switzerland, Belgium and Africa, 4-Mont s.r.o. today is one of the leading installation companies. More than 80 employees and 30 freelancers are the guarantee for quality and flexibility.

Our services
  • Installation and manipulation of heavy high security doors
  • Delivery and erection of steel / alu / stainless steel constructions

    Installation on nuclear and military fields

    Welding service of all types on site or in fabrication

    Service an maintenance on facdes, windows, doors

  • Worldwide provision of high qualified welders
  • Machines and tools especially adapted to facade and heavy doors installation
  • Installation of steel / metal / stainless steel constructions of all dimensions
  • Sales and consultance for high security facades and doors

We are proud of worldwide realized projects and satisfied clients.

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Security and fire doors

We offer welding of security and fire doors. No limits of size and weight.

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Proof of Quality by successful finalized projects of famous clients like SOMMER Design& Security, Starmann Facades, Roschmann Facades, Vinci France, Wolff & Müller, …..