Learn more about envelope types and common uses
Learn about common envelope styles, constructions, usage, and sizes, as well as standard envelopes and dimensions.
Announcement/Invitation
Common uses for A-Style envelopes are greeting cards, announcements, informal invitations, and small brochures.
Common A-Series Envelope Sizes and Body Dimensions Send greetings, announcements, and invitations in A-Style envelopes.
Wire of Life / Witty Howard Bear
Also known as A-style or A-line, these envelopes are often square, deep, open side envelopes with flaps and side seams, which may have a deckle edge on the top flap, and are often used with matching white and colored text and covers . You can find notices and other envelopes called invitations, greeting cards, or personal correspondence envelopes. Check the size and flap/seam style to get an idea of exactly what you’re looking for.
The following list shows name/numbering, envelope dimensions, and approximate maximum case dimensions for some of the more common A-Series envelope style sizes. The actual dimensions of the insert depend on the thickness of the insert (paper thickness, number of pages).
A1
5.125×3.625
4.75×3.5
A2
5.75×4.375
5.5×4.125
A6
6.5×4.75
6.25×4.5
A-7
7.25×5.25
7×5
A8
8.125×5.5
7.875×5.25
follow
(slim)
8.875×3.875
8.625×3.625
A10
9.5×6
9.25×5.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | 0.875 = 7/8
This A series envelope size is for the US only. International standard envelope sizes are different.
prince envelope
Send us an official notice of common Baronial envelope sizes and shell dimensions, or use fancy phrases and Baronial envelopes.
Wire of Life / Witty Howard Bear
Used for formal invitations, greeting cards, and some stationery, the Baronial is an almost square envelope with an open side, pointed flaps, and diagonal seams.
The inner/outer cover set comes with a non-rubber (slightly small) inner cover.
The list below shows the name/numbering, envelope dimensions, and approximate maximum case dimensions for some of the more common sizes of this envelope style. The actual dimensions of the insert depend on the thickness of the insert (paper thickness, number of pages).
2
4.25×3.1875
4x 2.9375
4
5.125×3.625
4.875×3.375
5
5.625×4.125
5.375×3.875
5 ¼
5.25×4.25
5×4
5½
5.625×4.375
5.375×4.125
6
6.5×4.75
6.25×4.625
Gladstone
5.5625×3.5625
5.375×3.375
aster
5.625×3.625
5.375×3.5
Mr. Lee
7.25×5.25
7×5.125
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | 0.875 = 7/8
This baron envelope size is for the USA only. International standard envelope sizes are different.
booklet envelope
Common Booklet Cover Sizes and Case Dimensions Booklet covers include more than just booklets.
Wire of Life / Witty Howard Bear
Small square or side open envelopes with wallet flaps and side seams, booklet envelopes are ideal for overall printing and mailing.
Booklet envelopes are used not only for booklets, but also for brochures, catalogs, annual reports and other multi-page mailings. They work well with automatic inserting machines.
The following list shows name/numbering, cover dimensions, and approximate maximum insert dimensions for some of the more common booklet cover style sizes. The actual dimensions of the insert depend on the thickness of the insert (paper thickness, number of pages).
three
6.5×4.75
6.25×4.5
4 ¼
7.5×5
7.25×4.75
4½
7.5×5.5
7.25×5.25
5
8.5×5.5
8.25×5.25
6
8.875×5.75
8.625×5.5
6½
9×6
8.75×5.75
6 5/8
9.5×6
9×5.75
6 ¾
9.5×6.5
9.25×6.25
7
9.625×6.25
9.375×6
7 ¼
10×7
9.75×6.75
7½
10.5×7.5
10.25×7.25
8 days
11,125×8
10.875×7.75
9
11.5×8.75
11.25×8.5
9½
12×9
11.75×8.75
10
12.625×9.5
12.125×9.25
13
13×10
12.75×9.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | 0.875 = 7/8
This brochure cover size is for the United States only. International standard envelope sizes are different.
catalog cover
Common catalog cover sizes and case dimensions Use catalog covers for heavy items such as magazines and catalogs.
Wire of Life / Witty Howard Bear
Catalog covers are commonly used for magazines, reports, catalogs, and other heavy materials.
Policy envelopes used for insurance policies, wills, mortgages, and other legal documents often have a full view window on the front.
The list below shows the name/numbering, envelope dimensions, and approximate maximum case dimensions for some of the more common sizes of this envelope style. The actual dimensions of the insert depend on the thickness of the insert (paper thickness, number of pages).
One
6×9
5.75×8.75
1 ¾
6.5×9.5
6.25×9.25
2
6.5×10
6.25×9.75
three
7×10
6.75×9.75
6
7.5×10.5
7.25×10.25
7
8×11
7.75×10.75
8 days
8.25×11.25
8×11
9 policy
4×9
3.75×8.75
9½
8.5×10.5
8.25×10.25
9 ¾
8.75×11.25
8.5×11
10 policy
4.125×9.5
3.875×9.25
10½
9×12
8.75×11.75
11 policy
4.5×10.375
4.25×10.125
12 policy
4.75×10.875
4.5×10.625
12½
9.5×12.5
9.25×12.25
13½
10×13
9.75×12.75
14 policy
5×11.5
4.75×11.25
14 ¼
11.25×14.25
11×14
14½
11.5×14.5
11.25×14.25
15
10×15
9.75×14.5
15½
12×15.5
11.75×15.25
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | 0.875 = 7/8
This catalog cover size is for the United States only. International standard envelope sizes are different.
commercial envelope
Common Trade Envelope Sizes and Case Dimensions #10 The Trade Envelope is the most popular size for business and personal correspondence.
Wire of Life / Witty Howard Bear
Commercial envelope sizes used for business purposes, direct mail and personal correspondence, and direct mail style envelopes include the readily available standard #10 envelopes.
Commercial envelopes, also known as business, standard or formal, are usually open envelopes with commercial style flaps and diagonal seams, but some sizes have side seams and square/purse or pointed flaps. The monarch is a variation on the #7 ¾ envelope, but with a pointed flap. The window version has a single or double window to display the address through the front of the envelope. Commonly used for bills or statements, salaries and receipts.
The list below shows the name/numbering, envelope dimensions, and approximate maximum case dimensions for some of the more common sizes of this envelope style. The actual dimensions of the insert depend on the thickness of the insert (paper thickness, number of pages).
#5
5.5×3.0625
5.25×2.8125
#6
6×3.375
5.75×3.125
#6 ¼
6×3.5
5.75×3.25
#6½
6.25×3.5625
6×3.3125
#6 ¾
6.5×3.625
6.25×3.5
#7
6.75×3.75
6.5×3.5
#7½
7.625×3.75
7.375×3.5
#7 ¾ & Monarch
7.5×3.875
7.25×3.75
Confirm
8.625×3.625
8.375×3.5
#9
8.875×3.875
8.625×3.75
#10
9.5×4.125
9.25×3.875
#10½
9.5×4.5
9.25×4.25
#11
10.375×4.5
10.125×4.25
#12
11×4.75
10.75×4.5
#14
11.5×5
11.25×4.75
#16
12×6
11.75×5.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | 0.875 = 7/8
This commercial envelope size is for the United States only. International standard envelope sizes are different.
square envelope
Common Square Envelopes and Shell Dimensions Square envelopes look great, but may cost more to ship than other formats.
Wire of Life / Witty Howard Bear
Square envelopes with large square flaps (sometimes pointed flaps) and side seams are unique, but non-standard sizes and shapes can potentially increase postage rates. Some square envelope sizes cannot be mailed unless they are placed in a larger mailing envelope.
Square envelopes are primarily used for announcements, advertisements, and special greeting cards or other mailings where the sender wants to draw attention to the content before opening the envelope.
The following list shows approximate maximum case dimensions for some of the name/numbering, envelope dimensions, and common square envelope style sizes. The actual dimensions of the insert depend on the thickness of the insert (paper thickness, number of pages).
5
5×5
4.75×4.75
6
6×6
5.75×5.75
6½
6.5×6.5
6.25×6.25
7
7×7
6.75×6.75
7½
7.5×7.5
7.25×7.25
8 days
8×8
7.75×7.75
8½
8.5×8.5
8.25×8.25
9
9×9
8.75×8.75
9½
9.5×9.5
9.25×9.25
10
10×10
9.75×9.75
13½
13.5×13.5
13.25×13.25
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | 0.875 = 7/8
This square envelope size is for the United States only. International standard envelope sizes are different.
More information
Standard Sizes and Dimensions for Envelope Enclosures
Learn about envelope types and typical uses
Explore common envelope styles, construction, usage, and sizes along with dimensions for standard envelopes and their enclosures.
Announcement / Invitation Envelopes
Typical uses of the A-Style envelopes are for greeting cards, announcements, informal invitations, and small booklets.
Common A Series Envelope Sizes and Enclosure Dimensions Send your greetings, announcements, and invitations in an A-Style envelope.
Lifewire / Jacci Howard Bear
Open side envelopes with square, often deep flaps and side seams, these envelopes, also called A-Style or A-Line, can have deckle edges on the top flap and are often used with matching text and cover papers in white and colors. You may find the announcement and other envelopes called invitation, greeting card, or personal correspondence envelopes. Look at the size and flap/seam style to know exactly what style you’re getting.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of the A-series envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
A15.125 x 3.6254.75 x 3.5
A25.75 x 4.3755.5 x 4.125
A66.5 x 4.756.25 x 4.5
A-77.25 x 5.257 x 5
A88.125 x 5.57.875 x 5.25
A-Long(Slimline)8.875 x 3.8758.625 x 3.625
A109.5 x 69.25 x 5.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These A series envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Baronial Envelopes
Common Baronial Envelope Sizes and Enclosure Dimensions Send formal announcements or use Baronial envelopes with fancy social stationery.
Lifewire / Jacci Howard Bear
Used for formal invitations, greeting cards, and some stationery, Baronial is an open side, almost square envelope with pointed flaps and diagonal seams.
Inner/Outer envelope sets come with the (slightly smaller) inner envelope ungummed.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of this envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
24.25 x 3.18754 x 2.9375
45.125 x 3.6254.875 x 3.375
55.625 x 4.1255.375 x 3.875
5 ¼5.25 x 4.255 x 4
5 ½5.625 x 4.3755.375 x 4.125
66.5 x 4.756.25 x 4.625
Gladstone5.5625 x 3.56255.375 x 3.375
Astor5.625 x 3.6255.375 x 3.5
Lee7.25 x 5.257 x 5.125
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These Baronial envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Booklet Envelopes
Common Booklet Envelope Sizes and Enclosure Dimensions Booklet envelopes hold more than just booklets.
Lifewire / Jacci Howard Bear
Open side envelopes with small square or wallet flaps and side seams, booklet envelopes are ideal for overall printing and mailing.
Booklet envelopes are used not only for booklets but for brochures, catalogs, annual reports, and other multi-page mailings. They work well with automatic insertion machines.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of the booklet envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
36.5 x 4.756.25 x 4.5
4 ¼7.5 x 57.25 x 4.75
4 ½7.5 x 5.57.25 x 5.25
58.5 x 5.58.25 x 5.25
68.875 x 5.758.625 x 5.5
6 ½9 x 68.75 x 5.75
6 5/89.5 x 69 x 5.75
6 ¾9.5 x 6.59.25 x 6.25
79.625 x 6.259.375 x 6
7 ¼10 x 79.75 x 6.75
7 ½10.5 x 7.510.25 x 7.25
811.125 x 810.875 x 7.75
911.5 x 8.7511.25 x 8.5
9 ½12 x 911.75 x 8.75
1012.625 x 9.512.125 x 9.25
1313 x 1012.75 x 9.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These booklet envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Catalog Envelopes
Common Catalog Envelope Sizes and Enclosure Dimensions Use catalog envelopes for heavy material like magazines and catalogs.
Lifewire / Jacci Howard Bear
Usually open-end envelopes with wallet flaps and center seams, catalog envelopes are used for magazines, reports, catalogs, and other heavy-weight materials.
Policy envelopes, used for insurance policies, wills, mortgages, and other legal papers sometimes come with a full-view window on the face.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of this envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
16 x 95.75 x 8.75
1 ¾6.5 x 9.56.25 x 9.25
26.5 x 106.25 x 9.75
37 x 106.75 x 9.75
67.5 x 10.57.25 x 10.25
78 x 117.75 x 10.75
88.25 x 11.258 x 11
9 Policy4 x 93.75 x 8.75
9 ½8.5 x 10.58.25 x 10.25
9 ¾8.75 x 11.258.5 x 11
10 Policy4.125 x 9.53.875 x 9.25
10 ½9 x 128.75 x 11.75
11 Policy4.5 x 10.3754.25 x 10.125
12 Policy4.75 x 10.8754.5 x 10.625
12 ½9.5 x 12.59.25 x 12.25
13 ½10 x 139.75 x 12.75
14 Policy5 x 11.54.75 x 11.25
14 ¼11.25 x 14.2511 x 14
14 ½11.5 x 14.511.25 x 14.25
1510 x 159.75 x 14.5
15 ½12 x 15.511.75 x 15.25
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These catalog envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Commercial Envelopes
Common Commercial Envelope Sizes and Enclosure Dimensions The #10 commercial envelope is the most popular size for business and personal correspondence.
Lifewire / Jacci Howard Bear
Used for business, direct mail, and personal correspondence, and direct-mail style envelopes, the commercial envelope style includes the standard, readily available #10 envelope.
Also called business, standard, or officials, commercial envelopes are open side envelopes usually with commercial style flaps and diagonal seams although some sizes come with side seams and square/wallet or pointed flaps. The Monarch is a variation of the #7 ¾ envelope but with a pointed flap. The window version has single or double windows that allow addresses to show through the face of the envelope. They are normally used for invoices or billing statements, paychecks, and receipts.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of this envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
#55.5 x 3.06255.25 x 2.8125
#66 x 3.3755.75 x 3.125
#6 ¼6 x 3.55.75 x 3.25
#6 ½6.25 x 3.56256 x 3.3125
#6 ¾6.5 x 3.6256.25 x 3.5
#76.75 x 3.756.5 x 3.5
#7 ½7.625 x 3.757.375 x 3.5
#7 ¾ & Monarch7.5 x 3.8757.25 x 3.75
Check8.625 x 3.6258.375 x 3.5
#98.875 x 3.8758.625 x 3.75
#109.5 x 4.1259.25 x 3.875
#10 ½9.5 x 4.59.25 x 4.25
#1110.375 x 4.510.125 x 4.25
#1211 x 4.7510.75 x 4.5
#1411.5 x 511.25 x 4.75
#1612 x 611.75 x 5.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These commercial envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Square Envelopes
Common Square Envelope Sizes and Enclosure Dimensions Square envelopes look great but can cost more to mail than other styles.
Lifewire / Jacci Howard Bear
With their large square flaps (and sometimes pointed flaps) and side seams, square envelopes are distinctive but the nonstandard size and shape can potentially increase postage costs. Some sizes of square envelopes cannot be mailed unless placed inside a larger, mailable envelope.
Square envelopes are used primarily with announcements, advertising, and specialty greeting cards or other mailings where the sender wants to draw attention to the contents before the envelope is even open.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of the square envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
55 x 54.75 x 4.75
66 x 65.75 x 5.75
6 ½6.5 x 6.56.25 x 6.25
77 x 76.75 x 6.75
7 ½7.5 x 7.57.25 x 7.25
88 x 87.75 x 7.75
8 ½8.5 x 8.58.25 x 8.25
99 x 98.75 x 8.75
9 ½9.5 x 9.59.25 x 9.25
1010 x 109.75 x 9.75
13 ½ 13.5 x 13.513.25 x 13.25
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These square envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
#Standard #Sizes #Dimensions #Envelope #Enclosures
Standard Sizes and Dimensions for Envelope Enclosures
Learn about envelope types and typical uses
Explore common envelope styles, construction, usage, and sizes along with dimensions for standard envelopes and their enclosures.
Announcement / Invitation Envelopes
Typical uses of the A-Style envelopes are for greeting cards, announcements, informal invitations, and small booklets.
Common A Series Envelope Sizes and Enclosure Dimensions Send your greetings, announcements, and invitations in an A-Style envelope.
Lifewire / Jacci Howard Bear
Open side envelopes with square, often deep flaps and side seams, these envelopes, also called A-Style or A-Line, can have deckle edges on the top flap and are often used with matching text and cover papers in white and colors. You may find the announcement and other envelopes called invitation, greeting card, or personal correspondence envelopes. Look at the size and flap/seam style to know exactly what style you’re getting.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of the A-series envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
A15.125 x 3.6254.75 x 3.5
A25.75 x 4.3755.5 x 4.125
A66.5 x 4.756.25 x 4.5
A-77.25 x 5.257 x 5
A88.125 x 5.57.875 x 5.25
A-Long(Slimline)8.875 x 3.8758.625 x 3.625
A109.5 x 69.25 x 5.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These A series envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Baronial Envelopes
Common Baronial Envelope Sizes and Enclosure Dimensions Send formal announcements or use Baronial envelopes with fancy social stationery.
Lifewire / Jacci Howard Bear
Used for formal invitations, greeting cards, and some stationery, Baronial is an open side, almost square envelope with pointed flaps and diagonal seams.
Inner/Outer envelope sets come with the (slightly smaller) inner envelope ungummed.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of this envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
24.25 x 3.18754 x 2.9375
45.125 x 3.6254.875 x 3.375
55.625 x 4.1255.375 x 3.875
5 ¼5.25 x 4.255 x 4
5 ½5.625 x 4.3755.375 x 4.125
66.5 x 4.756.25 x 4.625
Gladstone5.5625 x 3.56255.375 x 3.375
Astor5.625 x 3.6255.375 x 3.5
Lee7.25 x 5.257 x 5.125
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These Baronial envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Booklet Envelopes
Common Booklet Envelope Sizes and Enclosure Dimensions Booklet envelopes hold more than just booklets.
Lifewire / Jacci Howard Bear
Open side envelopes with small square or wallet flaps and side seams, booklet envelopes are ideal for overall printing and mailing.
Booklet envelopes are used not only for booklets but for brochures, catalogs, annual reports, and other multi-page mailings. They work well with automatic insertion machines.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of the booklet envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
36.5 x 4.756.25 x 4.5
4 ¼7.5 x 57.25 x 4.75
4 ½7.5 x 5.57.25 x 5.25
58.5 x 5.58.25 x 5.25
68.875 x 5.758.625 x 5.5
6 ½9 x 68.75 x 5.75
6 5/89.5 x 69 x 5.75
6 ¾9.5 x 6.59.25 x 6.25
79.625 x 6.259.375 x 6
7 ¼10 x 79.75 x 6.75
7 ½10.5 x 7.510.25 x 7.25
811.125 x 810.875 x 7.75
911.5 x 8.7511.25 x 8.5
9 ½12 x 911.75 x 8.75
1012.625 x 9.512.125 x 9.25
1313 x 1012.75 x 9.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These booklet envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Catalog Envelopes
Common Catalog Envelope Sizes and Enclosure Dimensions Use catalog envelopes for heavy material like magazines and catalogs.
Lifewire / Jacci Howard Bear
Usually open-end envelopes with wallet flaps and center seams, catalog envelopes are used for magazines, reports, catalogs, and other heavy-weight materials.
Policy envelopes, used for insurance policies, wills, mortgages, and other legal papers sometimes come with a full-view window on the face.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of this envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
16 x 95.75 x 8.75
1 ¾6.5 x 9.56.25 x 9.25
26.5 x 106.25 x 9.75
37 x 106.75 x 9.75
67.5 x 10.57.25 x 10.25
78 x 117.75 x 10.75
88.25 x 11.258 x 11
9 Policy4 x 93.75 x 8.75
9 ½8.5 x 10.58.25 x 10.25
9 ¾8.75 x 11.258.5 x 11
10 Policy4.125 x 9.53.875 x 9.25
10 ½9 x 128.75 x 11.75
11 Policy4.5 x 10.3754.25 x 10.125
12 Policy4.75 x 10.8754.5 x 10.625
12 ½9.5 x 12.59.25 x 12.25
13 ½10 x 139.75 x 12.75
14 Policy5 x 11.54.75 x 11.25
14 ¼11.25 x 14.2511 x 14
14 ½11.5 x 14.511.25 x 14.25
1510 x 159.75 x 14.5
15 ½12 x 15.511.75 x 15.25
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These catalog envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Commercial Envelopes
Common Commercial Envelope Sizes and Enclosure Dimensions The #10 commercial envelope is the most popular size for business and personal correspondence.
Lifewire / Jacci Howard Bear
Used for business, direct mail, and personal correspondence, and direct-mail style envelopes, the commercial envelope style includes the standard, readily available #10 envelope.
Also called business, standard, or officials, commercial envelopes are open side envelopes usually with commercial style flaps and diagonal seams although some sizes come with side seams and square/wallet or pointed flaps. The Monarch is a variation of the #7 ¾ envelope but with a pointed flap. The window version has single or double windows that allow addresses to show through the face of the envelope. They are normally used for invoices or billing statements, paychecks, and receipts.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of this envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
#55.5 x 3.06255.25 x 2.8125
#66 x 3.3755.75 x 3.125
#6 ¼6 x 3.55.75 x 3.25
#6 ½6.25 x 3.56256 x 3.3125
#6 ¾6.5 x 3.6256.25 x 3.5
#76.75 x 3.756.5 x 3.5
#7 ½7.625 x 3.757.375 x 3.5
#7 ¾ & Monarch7.5 x 3.8757.25 x 3.75
Check8.625 x 3.6258.375 x 3.5
#98.875 x 3.8758.625 x 3.75
#109.5 x 4.1259.25 x 3.875
#10 ½9.5 x 4.59.25 x 4.25
#1110.375 x 4.510.125 x 4.25
#1211 x 4.7510.75 x 4.5
#1411.5 x 511.25 x 4.75
#1612 x 611.75 x 5.75
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These commercial envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
Square Envelopes
Common Square Envelope Sizes and Enclosure Dimensions Square envelopes look great but can cost more to mail than other styles.
Lifewire / Jacci Howard Bear
With their large square flaps (and sometimes pointed flaps) and side seams, square envelopes are distinctive but the nonstandard size and shape can potentially increase postage costs. Some sizes of square envelopes cannot be mailed unless placed inside a larger, mailable envelope.
Square envelopes are used primarily with announcements, advertising, and specialty greeting cards or other mailings where the sender wants to draw attention to the contents before the envelope is even open.
The following list shows the name/number designation, envelope dimensions, and approximate maximum enclosure dimensions for some of the more common sizes of the square envelope style. Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages).
55 x 54.75 x 4.75
66 x 65.75 x 5.75
6 ½6.5 x 6.56.25 x 6.25
77 x 76.75 x 6.75
7 ½7.5 x 7.57.25 x 7.25
88 x 87.75 x 7.75
8 ½8.5 x 8.58.25 x 8.25
99 x 98.75 x 8.75
9 ½9.5 x 9.59.25 x 9.25
1010 x 109.75 x 9.75
13 ½ 13.5 x 13.513.25 x 13.25
All measurements in inches: .125 = 1/8 | .25 = 1/4 | .375 = 3/8 | .5 = 1/2 | .625 = 5/8 | .875 = 7/8
These square envelope sizes apply specifically to the United States. Standard International envelope sizes differ.
#Standard #Sizes #Dimensions #Envelope #Enclosures
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