Envelope Size Chart

There are various types of envelopes that can give a pleasant experience of opening a mail. Here is a size chart which has the ten most commonly used and standard envelope sizes.
An envelope gives the first impression of what is inside a mail. Hence, it becomes imperative to choose the most suitable size and shape of the envelope according to its enclosed mail. Moreover, it should not violate the standards prescribed by the postage department. To help you become familiar, here is a complete collection of 10 envelope sizes in the form of a chart. This chart shall provide a complete round up of not only its sizes but also a brief on its usage and looks.

Envelopes: Size Chart

Envelope Size Sample Image Description Measurements
Commercial
Commercial Envelope
 This is the most commonly used, standard business correspondence and direct mail envelope. It includes the widely used standard number 10 envelope.
Size Dimension Enclosure
6 ¼ 3.5" X 6" 3.25" X 5.75"
6 ¾ 3.625" X 6.5" 3.5" X 6.25"
8 5/8 3.625" X 8.625" 3.5" X 8.375"
Monarch (7 ¾) 3.875" X 7.5" 3.75" X 7.25"
9 (policy) 4" X 9" 3.75" X 8.5"
10 4.125" X 9.5" 4" X 9.25"
DL 4.313" X 8.625" 4.125" X 8.375"
11 4.5" X 10.375" 4.25" X 10.125"
12 4.75" X 11" 4.5" X 10.75"
14 5" X 11.5" 4.75" X 11.25"
16 6" X 12" 5.75" X 11.75"
Square Type
Square Type Envelope
 This may not be considered a legal envelope size in some places, but is used these days for special purposes. This may require extra postage charges to mail.
Wallet Flap
Wallet Flap Envelope
 Mostly used for bank and financial statements, and confidential documents that need a more secure envelope for extra protection.
Side Seam
Side Seam Envelope
 This type of envelope is ideally used when you need any kind of machine insertion.
Policy
Policy Envelope
 This is used to safely store or transfer insurance polices, bonds, mortgages and legal papers.
Booklet
Booklet Envelope
 It has sides with openings that allow the envelope for overall printing. May also be used for booklets, catalogs, folders and more.
Size Dimension Enclosure
3 4.75" X 6.5" 4.5" X 6"
4 1/2 5.5" X 7.5" 5.25" X 7"
5 5.5" X 8.125" 5.25" X 7.625"
6 5.75" X 8.875" 5.5" X 8.375"
6 1/2 6" X 9" 5.75" X 8.5"
6 5/8 6" X 9.5" 5.75" X 9"
6 3/4 6.5" X 9.5" 6.25" X 9"
7 1/4 7" X 10" 6.75" X 9.5"
7 1/2 7.5" X 10.5" 7.25" X 10"
9 8.75" X 11.5" 8.5" X 11"
9 1/2 9" X 12" 8.75" X 11.5"
10 9.5" X 12.625" 9.25" X 12.125"
13 10" X 13" 9.75" X 12.5"
Metal Clasp
Metal Clasp Envelope
 It is similar to the catalog style in size and looks, but has a metal clasp which allows multiple openings and closing.
Catalog
Catalog Envelope
 It is a large sized envelope used for catalogs magazines, folders, reports and more.
Window Type
Window Type Envelope
 This is an opening to show the name and address on enclosure. Mostly used for invoices, statements, paychecks, receipts, and more
Size Dimension Enclosure
6 1/4 6" X 3.5" 5.75" X 3.25"
6 3/4 6.5" X 3.625" 6.25" X 3.325"
7 6.75" X 3.75" 6.5" X 3.5"
7 3/4 (Monarch) 7.5" X 3.875" 7.25" X 3.625"
8 5/8 (Check) 8.625" X 3.625" 8.375" X 3.375"
9 8.875" X 3.875" 8.375" X 3.375"
10 9.5" X 4.125" 9.25" X 3.875"
11 10.375" X 4.5" 10.125" X 4.25"
12 11" X 4.75" 10.75" X 4.5"
14 11.5" X 5" 11.25" X 4.5"
Announcement
Announcement Envelope
 Designed for display using matching text and cover papers, and has deckle-edge flaps. It is ideal for stationery, photographs, greeting cards, small booklets, other display purposes.
Size Dimension Enclosure
A-2 4.375" X 5.75" 4.25" X 5.5"
A-6 4.75" X 6.5" 4.625" X 6.25"
A-7 5.25" X 7.25" 5.125" X 7"
A-8 5.5" X 8.125" 5.375" X 7.875"
A-9 5.75" X 8.75" 5.5" X 8.5"
A-10 6" X 9.5" 5.875" X 9.25"

Hope you find this size chart as the best overview you can get on various envelopes available and what they can be used for.
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Published: 3/3/2010
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