S.P. Richards Company Sheet Protectors, Top Load, 5 Mil, 9 x 11 Inches, 50 per Box, Clear (SPR74130) Durable, top-loading sheet protectors hold letter-size inserts without punching Printed materials do not stick or lift off of this specially formulated polypropylene material Super heavy-duty design features a 5 mil thickness, reinforced strip at binding edge and three-hole punched sides Durable, top-loading sheet protectors hold letter-size inserts without punching Super heavy-duty design features a 5 mil thickness, reinforced strip at binding edge and three-hole punched sides