Design evolution of an icon: The Dutch twin letterbox

This was a large and prestigious project from Joanna’s npk design portfolio. TPG Post commissioned npk to design and engineer the second generation of the Dutch Twin Letterbox. Joanna played a major role in creating the aesthetic concept and detailing the design. Currently it is found throughout the Netherlands.
design sketch dutch letterbox by Joanne Boothman
  Photo: Jan-Dirk van der Burg, de BeeldUnie
This was a large and prestigious project from Joanna’s npk design portfolio. TPG Post commissioned npk to design and engineer the second generation of the Dutch Twin Letterbox. Joanna played a major role in creating the aesthetic concept and detailing the design. Currently it is found throughout the Netherlands.

Designing the new Dutch twin letterbox

This second generation design was introduced in 2001 and gradually came to replace its predecessor, which had been on the streets since the 1960’s. The first generation was also very innovative for its time. This now current design comprises a number of functional improvements, including a larger capacity, better security and  a dynamic display. Furthermore it has an integrated space for postal marketing communications.

Fitting the Dutch Landscape

The national letterbox has an iconic status in the Dutch landscape and infrastructure. Therefore the goal was to create a design that could stand the test of time, minimally 30 years, both functionally and aesthetically. It should be recognizable from a distance and instill a sense of pride and trust in the people. This innovative design is in fact a revolution in the design of letterboxes, balancing function and form in an elegant and characteristic way. As a result it stands out from typical designs for letterboxes worldwide.

The iconic Dutch twin letterbox design involved

Extensive research to fully understand all of the postal logistics and infrastructure in the Netherlands

Design thinking; understanding and translating the spectrum of needs and wishes of the postal service and its clients into viable design directions

Product design and detailing

Testing; ergonomics and product safety for safe and durable use in the public area

Besides the Letterbox, Joanna and Hanno have worked on many successful design projects for the public space including street furniture for the city of Rotterdam, playground equipment and traffic signing for the city of Utrecht.

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