Ideal for books WITHOUT DUST JACKETS to protect and improve the appearance. This fits on just the same as a Fold-On Book Jacket--in less than 60 seconds. This is slightly heavier gauge than a Fold-On cover --2-mil instead of 1.5 mil. Each size is fully adjustable and fits up to that size; i.e. 16" fits any book up to 16" tall, by folding over the extra. Sold ten per size.
Made from chemically stable Super-Clear polyester film with a specially formulated pH-neutral PVA adhesive--premium protection which actually enhances the brilliance of book cover graphics!
Personal Note from Bud: The ideal way to protect a jacketless book is to use heavy mylar-type acetate. However, this cannot be fitted to a book by simple folding. It must be cut by hand. It comes only in large, expensive rolls. You need several rolls, costing upwards of $100 or more, to have a practical selection to work from for various book sizes.
I use acetate, which is available from library supply companies like Bro-Dart or Demco (we don't sell it). But I use it only to protect rare and particularly valuable antiquarian books that I take to shows for resale, and only on rare occasions for my own collection. To create an acetate cover requires a special cutting surface or mat with a grid, a sharp Xacto blade, a metal ruler, and some practice.
An Econo-Fold isn't as good as acetate, since it is relatively thin in comparison. BUT it does protect both front and back covers and the spine from general wear, from scuffing when being pulled off and put back on the shelf, and from any accident involving water drops or stains. Although I recommend acetate, even I find it hard to take the time to use it as often as I should. Econo-Folds are an easy, low-cost alternative. -Bud