KEYSTONE ENVELOPE

Keystone Envelope Company has been manufacturing filing and mailing products in the U.S.A. for over 100 years. All of our products are made with the highest quality materials available in the industry. With our experience we continue to separate ourselves from the rest of the industry by offering the highest quality products and the best service this industry has to offer... Keystone Envelope Company designs and manufactures custom and standard expanding pocket filing folders such as top or side tab pocket folders, or wallet-style, with paper or Tyvek® expansion gussets. All expanding filing products are available with reinforcement rivets. We also manufacture IP folders, with custom fasteners in standard or custom colors, all products proudly made in the USA!

Also known as: Keystone Envelope Company