Maximum burglary protection

With 87%, windows and balcony doors are the preferred points of attack for burglars. Optimum protection and maximum security are basic prerequisites for a peaceful living environment. This means that the quality of your windows is essential for your security.

Filigree architecture design in harmony with highest security

The frameless sliding window swissFineLine proves that aesthetic architectural design and maximum safety can work without loss.

With the label swissFineLine Protect, the leading manufacturer of frameless light metal windows and a competent security specialist offers the only sliding window on the market,

which meets the high burglary protection in the resistance class RC4.

Unique to swissFineLine Protect is its unrestricted architectural design, which impresses with its transparency and generosity without compromising the safety components.

No chance for burglars.

According to the police crime statistics recorded by the Federal Statistics Office, 127 break-ins were registered per day in 2016. This corresponds to a break-in every 11 minutes. Switzerland continues to be the number one target for gangs and thieves in Europe.

With the burglar resistance class RC4, swissFineLine resists even extreme attempts at burglary and provides an absolute maximum of personal and property protection.

Protect what is important to you.

The higher the resistance class, the harder it is to break in. Whereas properties with resistance class RC1 have only a low level of burglary protection which can be overcome by burglars relatively quickly, the higher resistance classes require significantly more time and additional tools.

Resistance classes to DIN EN 1627

Je höher die Widerstandsklasse, desto schwieriger der Einbruch.


Resistance period 3 minutes.

Building components with resistance class RC1 only provide a low level of protection against the use of leverage tools.


Resistance period 3 minutes.

Occasional perpetrators will try to break open locked and bolted building components using simple tools such a screwdrivers, pliers and wedges.


Resistance period 5 minutes.

The perpetrator tries to break open the locked and bolted building component using additionally a second screwdriver, a crowbar and a simple drill.


Resistance period 10 minutes.

The experienced perpetrator will additionally use sawing tools and striking tools, such as an axe, a crowbar, a hammer and chisel, as well as a cordless power drill.


  • swissFineLine Protect of resistance class RC4 easily withstands even the most brutal attacks and professionally planned break-ins with sawing and striking tools such as axe, chisel, hammer and chisel as well as cordless drill
  • With the resistance classes RC2, RC3 and RC4, swissFineLine Protect offers elements for a wide range of requirements. 
  • Independently certified according to DIN EN 1627 by the accredited test institutes ift Rosenheim GmbH (Rosenheim, Germany) and gbd Zert GmbH (Dornbirn, Austria)

Did you know that...

  • Windows and patio doors are the main entry points in the event of burglary. Almost 40% of burglars gain access via the sliding doors.
  • burglary attempts usually last only a few minutes or even seconds, when window sashes are levered open with a screwdriver
  • most burglaries happen during the day from 10 am. It is assumed that nobody is at home at this time of day. 
  • in resistance class RC4 even attempted burglaries are repelled by experienced perpetrators with professional tools for at least 10 minutes.

Personal consultation

By video call or in our exhibition.

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Chanceless from the outside

No chance for burglars. swissFineLine achieves top security class RC4. Find out more about the most secure elegant sliding window.

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