12 x 15-1/2 catalog envelopes with gummed flaps and heavyweight 28 lb. brown Kraft stock 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 sturdy catalog envelopes are made of 28 lb. 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 12 x 15-1/2 size will accommodate standard size or larger documents flat. Fully gummed flaps assure a secure permanent seal. Purchasing envelopes will be at a minimum with the convenient 100 count giving you more time to focus on business.