Archival RF-Series sheet protector refill pages and page protectors. Quality, acid-free polypropylene material with acid-free black paper inserts. Sealed on 3 sides; top or bottom loading. Page protectors have universal holes allowing use in most presentation cases, presentation binders, art portfolios, 3-ring binders. Available in 6 popular sizes, including 11x17 digital output size. Sold in packs of either 5 or 10 as shown below. Alvin Prestige RF archival refill sheet protector pages.