Business Source Top-Loading Poly Sheet Protectors Packaged Quantity 100 per box. Durable, top-loading sheet protectors hold letter-size inserts without punching. Printed materials do not stick or lift off this specially formulated polypropylene material. Design features a reinforced strip at binding edge and three-hole punched sides. Die-cut corners on ring side allow standard-weight pages to turn freely. Oversized ring binders and indexes are sold separately. (Replaces Part# UNV21125) *This product is not eligible for return* Part# BSN74551