The codex consists of parchment, originally in double sheets, which may have measured about 40 by 70 cm. The whole codex consists, with a few exceptions, of quires of eight leaves, a format popular throughout the Middle Ages. Each line of the text has some twelve to fourteen Greek uncial letters, arranged in four columns (48 lines per column) with carefully chosen line breaks and slightly ragged right edges. When opened, the eight columns thus presented to the reader have much the same appearance as the succession of columns in a papyrus roll. The poetical books of the Old Testament are written stichometrically, in only two columns per page. The codex has almost 4,000,000 uncial letters.