Preserve your information today and in the future. EverFile paper is a unique stock developed especially for the long-term preservation of your important documents. The folders are acid-free and lignin-free and remain chemically stable for 50 years or more. They won't cause your stored documents to age and become brittle. EverFile file folders are also treated with an antimicrobial coating to resist mold, mildew and associated odors. They meet PAT standards recommended for storage of photographic paper or film. Made from 11 point stock. Offers 1/3 cut assorted tabs. Packed 100 per box- Letter size.