Avery Products - Avery - Secure Side-Load Sheet Protectors, Heavy Gauge, Ltr, Diamond Clear, 25/Pack - Sold As 1 Pack - Three hole punch for 11 x 8 &frac12; unpunched sheets. - Opening faces binder rings to keep documents secure. - Archival safe and acid-free, won&rsquo;t lift print. - Polypropylene. - Fits standard three-ring binders. Three hole punch for 11 x 8 ? unpunched sheets. Opening faces binder rings to keep documents secure. Archival safe and acid-free, won't lift print. Polypropylene. Fits standard three-ring binders.