10″ x 15″ catalog envelopes feature a self-seal closure for mailing, storing and organizing. Whatever your needs, catalog envelopes are a must, keeping projects, files and mailings manageable. Heavyweight construction is made of 28 lb. brown Kraft stock that withstands extensive handling and mailing. Contents are protected during use to give you assurance they arrive unharmed. 10″ x 15″ size accommodates standard-size or oversized documents without folding. Redi-Seal closure saves time and produces a secure, permanent seal.