What it means
A wrap cover (or full cover spread) is how a paperback or casewrap hardcover cover is actually supplied to a printer: not a front image, but one wide flat file laid out as back cover · spine · front cover, reading left to right, with bleed on every outer edge. It is printed on one sheet, laminated, and wrapped around the book block — hence the name.
Its size is arithmetic. Width = (2 × trim width) + spine width + (2 × bleed); height = trim height + (2 × bleed). For a 6 × 9 in book with a 0.75 in spine and 0.125 in bleed, the file is 12.875 × 9.25 in. Hardcover wraps add the wrap-around allowance that folds over the boards.
Because the spine width sits in the middle of the sum, the cover cannot be finalised until the page count is. Printers issue templates for each trim and page count, and a barcode zone on the back is part of them.
In Bindery
Bindery designs the cover and sizes its spine from the real page count; the bookstore pack supplies the finished wrap cover with a barcode.
Make the book, not the checklist
Describe a book or upload a manuscript. Bindery writes with you, typesets in LaTeX, sizes the spine from the real page count and produces printer-validated files — the watermarked proof is always free.
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