The Pina Zangaro 11 x 8.5 In. Polypropylene Express Sheet Protector (Portrait, 10 Sheets) is identical to our Polypropylene Sheets but it has no black liner. Made in the USA of inert, unplasticized, heat resistant and chemically stable archival quality .0045 polypropylene, these sheets pass the PAT test and feature a non-stick finish to prevent adhesion to your artwork. Available in four standard formats, the sheets are top-loading and are sold in packs of 10 in a protective metallic resealable bag. The scratch resistant surface keeps your work safe while the non-stick finish prevents irritating adhesion. In addition, a non-glare finish helps to better present your work.Features: Suitable for most manufacturersPunched for 3-hole and screwpost bindersPhotographic Activity Test (PAT) qualifiedMeets ANSI requirementsSealed in protective metallic, resealable bag