iUniverse publishes trade-paperback books in a perfect-bound format (i.e. the format typical of most professional books found in stores). We also publish hardcover books and eBooks. We do not publish wire-o, plasticomb, three-ring or spiral-bound books. iUniverse prints perfect-bound books in the following sizes:
| Available Binding Sizes (measured in inches) | ||||
| 5 x 8 | 5.5 x 8.5 | 6 x 9 | 7.5 x 9.25 | 8.5 x 11 |