Types of Correspondence Envelopes
Envelopes used for correspondence became increasingly in demand during the 1840s. At that time, writing a letter or sending information through the United States Postal Service began to gain popularity. Dozens of different envelopes were created for different individual and business use, with the majority of the first envelope styles still in use today.
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Business Envelope
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Business envelopes are widely available is various sizes. A number, usually a #9 or a #10, characterizes the size. These envelopes are made from paper stock of 16 to 40 pounds.
Window Envelope
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Window envelopes are usually used for bills, bank statements, or invoice statements. They have a distinguishing window with clear plastic to allow the address to be seen without printing on the outside of the envelope.
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Clasp Envelope
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Clasp envelopes are large envelopes, usually 9 by 11 inches in size, with a metal clasp and adhesive on the flap. These envelopes are generally made of manila, and are light brown in color.
Open-End Envelope
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Open-end envelopes are used for catalogs, brochures, or magazines, and are brown or white in color. These envelopes have a glue flap and are sometimes reinforced with fibers for added strength.
Interoffice Envelope
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Interoffice envelopes are available in several different sizes and have two basic types of closures, the string and button, or Velcro. Most interoffice envelopes have printed lines on the outside for information such as to whom the envelope is to be delivered and the sender's name. Interoffice envelopes often are available in different colors for different usage or departments.
Personal Correspondence Envelope
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Personal correspondence envelopes are used for letters of a personal nature. Usage of personal envelopes has declined because of the rising popularity of Internet email for personal correspondence.
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