Archello Awards 2026 · Enter your projects before 30 September 2026
Archello Awards 2026 · Enter your projects before 30 September 2026

The letterbox 3-4-5 has been in BD’s catalogue for over 30 years and has become a classic in Spanish design.

Tusquets and Clotet designed the first letterboxes which were placed “in rowlock” that is vertically on one edge. This way they could offer more capacity than the traditional letterbox, visually occupying much lesser space.