Snap-In Heavyweight Sheet ProtectorSave time by inserting and removing without opening binder rings. Acid-free, archival-safe, nonstick material won't lift print. Specially designed notches hold protectors securely in standard three-ring binder. Diamond clear cover offers exceptional clarity. Three-hole punched, allowing you to store unpunched inserts. Sealed on three sides for maximum protection. Load Orientation: Top; Sheet Protector Type: Ring Binder.