This line refill size of 8.5" x 11" , 200 sheets/400 pages for 400 days, improve your productivity with this daily organizer. The unpunched loose-leaf lined paper for ring binder, discbound notebook or planner inserts, compatible with Filofax Organizers & Clipbook, Junior Levenger, Levenger Circa, Arc, TUL, Martha Stewart, Talia etc. Refill paper is used to high quality 100gsm pure white premium acid-free paper, so you can confidently use most pens, pencils, and markers without ghosting and bleed-through. This refill line paper for school notes, meeting notes, or any form of writing, our Ruled Sheets have subtle gray lines spaced by a quarter inch.