Business Envelope Sizes

There are more than 1,400 different classifications of paper, and any sheet can be cut to almost any specification. The size and shape of envelopes are limited only by the designer’s imagination.

Envelope Style Classification:
Selecting the proper envelope for your job can mean the difference between successful delivery of your printed product and a completely failed effort. The following envelope classification list describes the many different styles of envelopes available today, several from ImageMakerGraphics

Business  Envelopes

business envelopes

Standard correspondence envelopes. Open-side style with gummed flaps. Made in wide range of Bond and Kraft. Commercial sizes range from No. 5 to No. 6 3/4. Official sizes range from No. 7 to No. 14.

No.                            Size
#5                       3 1/16 x 5 1/2
#6                       3 3/8 x 6
#6 1/4                3 1/2 x 6
#6 1/2                3 9/16 x 6 1/4
#6 3/4                3 5/8 x 6 1/2
#7                       3 3/4 x 6 3/4
#7 1/2                3 3/4 x 6 3/4
#7 3/4                3 7/8 x 7 1/2 (Monarch)
Data Card            3 1/2 x 7 5/8
#8 5/8 (Check)    3 5/8 x 8 5/8
#9                       3 7/8 x 8 7/8
#10                     4 1/8 x 9 1/2
#10 1/2              4 1/2 x 9 1/2
#11                     4 1/2 x 10 3/8
#12                     4 3/4 x 11
#14                     5 x 11 1/2


Booklet Envelopes

For use with booklets. folders and other types of direct mail. Open side design permits overall printing.

No.                           Size
#2 1/2               4 1/2 x 5 7/8
#3                      4 3/4 x 6 1/2
#4 1/4               5 x 7 1/2
#4 1/2               5 1/2 x 7 1/2
#5                      5 1/2 x 8 1/2
#6                      5 3/4 x 8 7/8
#6-1/2              6 x 9
#6-3/4              6 1/2 x 9 1/2
#7                     6 1/4 x 9 5/8
#7 1/4              7 x 10
#7 1/2              7 1/2 x 10 1/2
#8                     8 x 11 1/8
#9                     8 3/4 x 11 1/2
#9 1/2              9 x 12
#10                   9 1/2 x 12 5/8
#13                  10 x 13


Ticket Envelopes

Open-side envelopes for theater tickets. Often printed with advertising.

No.                  Size
#3            1 15/16 x 4 7/1
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Window Envelopes

Window allows the name and address typed on enclosure to show through. Used for invoices,  statements, checks, receipts, etc.

No.                             Size
#6 1/4                   3 1/2 x 6
#6 3/4                   3 5/8 x 6 1/2
#7                          3 3/4 x 6 3/4
#7 3/4                   3 7/8 x 7 1/2
#8 5/8 (Check)       3 5/8 x 8 5/8
#9                          3 7/8 x 8 7/8
#10                        4 1/8 x 9 1/2
#11                        4 1/2 x 10 3/8
#12                        4 3/4 x 11
#14                        5 x 11 1/2

Window Size and Position
Window size: 4 3/4 x 1 1/8. Position: 3/4″ from left, 1/2″ from bottom. Size #8 5/8 is 5/8″ from left, 13/16″ from bottom.
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Remittance Envelopes

Large flap can be printed to contain any message. Used for coupons, credit information, applications, statements, etc.

No.                          Size
#6 1/4         3 1/2 x 6 (3 3/8 Flap)
#6 1/2         3 1/2 X 6 1/4 (3 3/8 Flap)
#6 3/4         3 5/8 x 6 1/2 (3 1/2 Flap)
#9                3 7/8 x 8 7/8 (3 1/2 Flap)
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Policy Envelopes

Primarily used for insurance policies. Also to hold bonds, mortgages, and legal papers.

No.                    Size
# 9              4 x 9
#10             4 1/8 x 9 1/2
#11             4 1/2 x 10 3/8
#12             4 3/4 x 10 7/8
#14             5 x 11 1/2
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Catalog Envelopes

Open-end style. Wide seams with heavy gummed flaps provide good protection for mail handling of heavier materials, catalogs, magazines, reports, etc.

No.                     Size
#1                6 x 9
#1 3/4         6 1/2 x 9 1/2
#2                6 1/2 x 10
#3                7 x 10
#6                7 1/2 x 10 1/2
#7                8 x 11
#8                8 1/4 x 11 1/4
#9 1/2         8 1/2 x 10 1/2
#9 3/4         8 3/4 x 11 3/4
#10 1/2       9 x 12
#12 1/2       9 1/2 x 12 1/2
#13 1/2       10 x 13
#14 1/4       11 1/4 x 14 1/4
#14 1/2       11 1/2 x 14 1/2
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Metal Clasp Envelopes

Strong and durable. Ideal for heavy enclosures and mailing bulky loose papers. Can be opened and closed many times.

No.                   Size

#0              2 1/2 x 4 1/4
#5              3 1/8 x 5 1/2
#10            3 3/8 x 6
#11            4 1/2 x 10 3/8
#14            5 x 11 1/2
#15            4 x 6 3/8
#25            4 5/8 x 6 3/4
#35            5 x 7 1/2
#50            5 1/2 x 8 1/4
#55            6 x 9
#63            6 1/2 x 9 1/2
#68            7 x 10
#75            7 1/2 x 10
#80            8 x 11
#83            8 1/2 x 11 1/2
#87            8 3/4 x 11 1/4
#90            9 x 12
#93            9 1/2 x 12 1/2
#94            9 1/4 x 14 1/2
#95            10 x 12#97        10 x 13
#98            10 x 15
#105          11 1/2 x 14 1/2
#110          12 x 15 1/2
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Announcement Envelopes

Made for use with invitations, announcements, and greeting cards. Comes in a wide range of matching text and cover papers. Many have deckle edge flaps.

No.                 Size
A2            4 3/8 x 5 5/8
A6            4 3/4 x 6 1/2
A7            5 1/4 x 7 1/4
A8            5 1/2 x 8 1/2
A10          6 1/4 x 9 5/8
Slim          3 7/8 x 8 7/8
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Wallet Flap Envelopes

Deep flap and heavy weight paper for bulky mailings or correspondence. Much stronger than standard Commercial envelopes.

No.                   Size
#10            4 1/8 x 9 1/2
#11            4 1/2 x 10 3/8
#12            4 3/4 x 11
#14            5 x 11 1/2
#16            6 x 12
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Baronial Envelopes

Formal envelopes with deep pointed flap. Frequently lined with colored paper for formal correspondence. Widely used for invitations, announcements, greeting and social cards.

No.                    Size
#2               3 3/16 x 4 1/4
#4               3 5/8 x 4 5/8
#5               4 1/8 x 5 1/8
#5 1/4        4 1/4 x 5 1/4
#5 1/2        4 3/8 x 5 5/8
#6               5 x 6
Sizes can vary according to the specific manufacturer.
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Coin Envelope

Used for paper currency, as well as coins by banks and individual companies. Also is used for small parts.

No.                    Size
#1               2 1/4 x 3 1/2
#3               2 1/2 x 4 1/4
#4               3 x 4 1/2
#4 1/2        3 x 4 7/8
#5               2 7/8 x 5 1/4
#5 1/2        3 1/8 x 5 1/2
#6               3 1/8 x 6
#7               3 1/2 x 6 1/2
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Self Seal Envelopes

Has two latex surfaces that seal to each other on contact. Usage will depend on the style chosen. Some standard sizes are:

No.                              Size
#6 1/4                  3 1/2 x 6
#6 3/4                  3 5/8 x 6 1/2
#7                         3 3/4 x 6 3/4
#7 3/4                  3 7/8 x 7 1/2
#8 5/8 (Check)      3 5/8 x 8 5/8
#9                         3 7/8 x 8 7/8
#10                       4 1/8 x 9 1/2
#11                       4 1/2 x 10 3/8
#12                       4 3/4 x 11
#14                       5 x 11 1/2

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HCFA Security Envelopes

These envelopes are tinted with a pattern inside for privacy. Common uses include financial statements, checks, registered letters, private correspondence and more. Available in many sizes & styles.

No.                             Size
#6 1/4                  3 1/2 x 6
#6 3/4                  3 5/8 x 6 1/2
#7                         3 3/4 x 6 3/4
#7 3/4                  3 7/8 x 7 1/2
#8 5/8 (Check)      3 5/8 x 8 5/8
#9                         3 7/8 x 8 7/8
#10                       4 1/8 x 9 1/2
#11                       4 1/2 x 10 3/8
#12                       4 3/4 x 11
#14                       5 x 11 1/2
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Be sure to ask your printing or paper rep for more specific information on envelopes as they pertain to your project.

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