Looking for maximum protection for your documents? Heavyweight sheet protectors have built-in antimicrobial protection. Antimicrobial protection helps prevent the growth of stain causing bacteria, yeasts, molds, and fungi for the life of the sheet protector. Triclosan-free. No sheet punching is necessary. Acid-free protection means no photocopy transfer. Top Load, Clear. Measures 11" x 8 1/2". Box of 100.