FF Unit Slab supports 164 different languages such as Spanish, English, Portuguese, Russian, German, French and Greek in Latin, Cyrillic, and Greek scripts. (Please note that not all languages are available for all formats.)
When Christian Schwartz and Erik Spiekermann were working on FF Meta Serif, they had plans to also expand the FF Unit family (a closely related design) to include FF Unit Slab. They figured that it would be nice to create a serif and slab that could be used together, as well as with their own sans counterparts. While FF Meta Serif featured a more classical structure, FF Unit Slab was shaping up to be more clean and contemporary, the i and l in FF Unit dictating the look of the serifs. Working with Christian Schwartz, Kris Sowersby roughed out several ranges of test words for both families to be evaluated together. The slab lay half done as FF Meta Serif’s production work was completed. FF Unit Slab is a compactly-fit slab serif that adds punch to headlines and sets text with great clarity. As suggested above, the family was made to mix well in a number of situations: It can be used with FF Meta or FF Unit, obviously, or serve to extend the range of FF Meta Serif, for caption work, for example. The two families have a lot in common and know how to support each other.