This standard transparent mylar cover fits dust jackets up to the indicated height on books that are in the usual format (taller than they are wide). For square, or for oblong books (wider than they are tall), a taller cover may be needed to provide enough length to adequately cover the inner flaps. These covers are for dust jackets only; they will not work for books without jackets.
The paper backing of our dust jacket covers is split in the center, making it easy to insert the dustjacket in the cover and to adjust the height of the top half of the cover, pulling it taut to match the height of the contained dustjacket before creasing the mylar for a permanent top fold.
Our covers are shipped flat, not rolled, in quantities of 10 per unit ordered.