Notebook filler paper is just what you need to create note-taking sections within your letter-size binders. Each sheet is three-hole punched to fit any standard three-ring binder or fastener folder. Each 16 lb. sheet features a red margin line and wide/legal-ruling in faint blue so you can easily organize your notes.Notebook filler paper is just what you need to create note-taking sections within your letter-size binders. Each sheet is three-hole punched to fit any standard three-ring binder or fastener folder. Each 16 lb. sheet features a red margin line and wide/legal-ruling in faint blue so you can easily organize your notes.