Top-and-side opening for extra-simple loading Folds open, like turning a page - for quick and easy insertion of pages! Great for papers that need to be removed frequently, such as lists, plans or charts. Nonstick surface won't lift ink off the page. Acid free and archival safe. Avery Sheet Protectors part of a large selection of office supplies. Avery(R) Quick-Load Nonstick Sheet Protectors, Heavyweight, Diamond Clear, Box Of 50 is one of many Sheet Protectors available through Office Depot. Made by Avery.