10 x 13 catalog envelopes with Peel & Seal closure for home or office mailing, storage and organizing. Keeping your home or business organized is imperative! Whatever your needs, catalog envelopes are a must for keeping projects, files and mailings manageable. These catalog envelopes are made of brown Kraft stock that can withstand extensive handling, as well as mailing. Contents are protected during use to give you assurance that they arrive unharmed. When folding is undesired these envelopes are the right choice - the 10 x 13 size will accommodate standard or over sized documents without folding. Pull-off self seal closure saves time and makes a secure permanent seal.