Window frame covers and mirror triangles

Maximum demands on surface feel and appearance

Window frames and mirror triangles made of various engineering plastics

We develop and manufacture window frame covers and mirror triangle systems according to individual customer requirements.

Window frame covers serve as door shell covers, are design elements and improve vehicle interior acoustics. Apart from that, further systems, such as loudspeakers or visual displays, can be integrated in window frame assemblies. Depending on design and customer specifications mirror triangle systems can be separated from window frame assemblies. It is also common practice to integrate acoustic foams and LED light units.

Depending on the requirements loudspeaker covers can be manufactured of a variety of materials, mostly of expanded metal, stainless steel, or also injection-molded plastic grids which can be lacquered and upon request labeled with a manufacturer’s logo.

Our expertise

  • Component design and dimensioning considering environmental data
  • Strength, deformation, and filling simulation
  • Installation-friendly simulation and design
  • Complete component qualification
  • Multi-component injection molding
  • Injection-molding around inserts
  • Automated module or system assembly including EOL tests
  • Specific mold design
Our team

Wherever mobility development takes us, we will always respond to our customers‘ requirements.

Portrait von Lars Lederer

Lars Lederer

Director Business Unit Mobility

Krzysztof Gorzechowski

Director Sales and PM Poland
Portrait von Oliver Weiß

Oliver Weiss

Global Key Account Manager
Portrait von Johannes Döhler

Johannes Döhler

Global Key Account Manager

Valen Pan

Director Sales and PM China

Robert Fehl

Global Key Account Manager

Yannick Spiller

Global Key Account Manager
Your project with Wirthwein

Get in touch with our Mobility team.

You have an inquiry, require technical advice or would like us to call you back? Then please make use of our contact form, write us an e-mail or just call us.

+49 7933 702 0


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Your design is our challenge

Full service from the very start

Basis for successful series production

The right form