10 - 11" x 24" Brodart Archival Fold-On Book Jacket Covers -- Center-loading, Clear, Mylar, Adjustable These high quality book jacket covers are Center-Loading for Dust Jackets up to 11" tall. The covers are 1.5 mil in thickness. Super-Clear covers protect from harmful UV rays. Overall dimension of these Book Covers are: 11" Tall x 24" Wide. Closed edges are permanently bonded. Paper backing for added protection.