

#STANDARD ENVELOPE SIZES ISO#
The ISO 216 was formed based on the old German DIN 476 Standard which further references a letter by a scientist describing the specialties of the √2:1 aspect ratio. This helps to make these papers easily resizable. All paper and envelope sizes included in the ISO 216 follow a basic rule that they should have an aspect ratio of √2:1.
#STANDARD ENVELOPE SIZES SERIES#
The dimensions of Paper Sizes in C Series Envelope Sizes have very precisely defined in the ISO 216. US & North American Envelope Sizes are not covered by ISO 216, that’w why we’ve mentioned them on this page. For this, we created the Standard C Series Envelope Sizes. So, when paper sizes has standardized, it was important that Envelope Sizes too should have standardized. Envelopes are so helpful that we use them everywhere and for all purpose of sending documents. The hole drilling is a good idea for florists so they can attach the card and envelope to bouquets and arrangements.Envelopes have been used for centuries to enclose letters and other documents, and they have proved to be useful for the ease of transportation, maintaining of confidentiality, and prevention from threats to security. They are 4 1/4" long x 2 1/2" high and come with or without a hole drilled on the side. They are also called card envelopes as they can fit business card size materials. These envelopes are the smallest of all envelopes. Some envelopes are also pre-printed with the words "First Class" for companies wishing to send their mail that way. These shipping envelopes are available with different paper types, such as kraft or Tyvek® paper, which is tear-proof. Envelopes with the opening on the long end are usually intended for catalogs so that they can more easily be inserted whereas the opening on the short end is more for letters or documents. The opening of the envelope can be on the long side (also called catalog envelopes) or short side (also called booklet envelopes). They range in size, varying from 6" x 9", 9" x 12", 10" x 13" to accomodate different content sizes. These envelopes are used to ship contents to customers or suppliers. Examples of this can be survey responses or subscription cut-outs. #6 envelopes can fit inside #10, #9 and #8 envelopes and can be used for smaller than a letter size replies. These envelopes are used as smaller reply envelopes. Check envelopes fit inside #10 and #9 envelopes.
#STANDARD ENVELOPE SIZES WINDOWS#
#8 envelopes typically come with two windows so that the recipient and receiver addresses from the check can appear and save you time.


These envelopes are used to send checks and are therefore called check envelopes for that reason. For more information on this please read our article on the Intelligent Mail Barcode. With a postal permit, the company sending the mail is billed for the return as well. For faster processing by the post office, companies may apply for a permit which will let the receiver not pay for postage. #9 envelopes fit inside a #10 envelope and are usually included with the piece of mail being sent so that the receiver may send a reply more easily. These envelopes are designed for replies and returns. They are typically used for invoices, statements, and communications of all sorts. #10 envelopes can fit a #9, #8, and a #6 envelope inside of it. These envelopes are the most standard size for business purposes.
