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Standard Sizes and Dimensions for Envelope Enclosures
Learn about envelope types and typical uses
By Jacci Howard Bear Jacci Howard Bear Writer A graphic designer, writer, and artist who writes about and teaches print and web design. lifewire's editorial guidelines Updated on January 7, 2020 Tweet Share Email Tweet Share Email
In This Article
Expand Jump to a Section A-Style: Announcements and Invitations Baronial Envelopes: Formal, Cards, and More Booklet Envelopes: Printing and Mailing Catalog Envelopes: Heavy-Weight Materials Commercial Envelopes: Business, Direct-Mail Square: Distinctive, Specialty Uses Explore common envelope styles, construction, usage, and sizes along with dimensions for standard envelopes and their enclosures.
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Announcement Invitation Envelopes
Typical uses of the A-Style envelopes are for greetin...
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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.
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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.
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Zoe Mueller 1 minutes ago
The following list shows the name/number designation, envelope dimensions, and approximate maximum e...
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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). A1 5.125 x 3.625 4.75 x 3.5 A2 5.75 x 4.375 5.5 x 4.125 A6 6.5 x 4.75 6.25 x 4.5 A-7 7.25 x 5.25 7 x 5 A8 8.125 x 5.5 7.875 x 5.25 A-Long (Slimline) 8.875 x 3.875 8.625 x 3.625 A10 9.5 x 6 9.25 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.
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Joseph Kim 12 minutes ago
Standard International envelope sizes differ.
Baronial Envelopes
Common Baronial Envelope...
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Lifewire / Jacci Howard Bear Used for formal invitations, greeting cards, and some stationery, Baron...
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Luna Park Member
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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.
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Lifewire / Jacci Howard Bear Used for formal invitations, greeting cards, and some stationery, Baron...
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Thomas Anderson Member
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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.
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The following list shows the name/number designation, envelope dimensions, and approximate maximum e...
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Nathan Chen 10 minutes ago
Standard International envelope sizes differ.
Booklet Envelopes
Common Booklet Envelope S...
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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). 2 4.25 x 3.1875 4 x 2.9375 4 5.125 x 3.625 4.875 x 3.375 5 5.625 x 4.125 5.375 x 3.875 5 ¼ 5.25 x 4.25 5 x 4 5 ½ 5.625 x 4.375 5.375 x 4.125 6 6.5 x 4.75 6.25 x 4.625 Gladstone 5.5625 x 3.5625 5.375 x 3.375 Astor 5.625 x 3.625 5.375 x 3.5 Lee 7.25 x 5.25 7 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.
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Standard International envelope sizes differ.
Booklet Envelopes
Common Booklet Envelope S...
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Hannah Kim Member
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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.
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Booklet envelopes are used not only for booklets but for brochures, catalogs, annual reports, and ot...
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Evelyn Zhang 10 minutes ago
The following list shows the name/number designation, envelope dimensions, and approximate maximum e...
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Nathan Chen Member
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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.
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The following list shows the name/number designation, envelope dimensions, and approximate maximum e...
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Henry Schmidt 18 minutes ago
Standard International envelope sizes differ.
Catalog Envelopes
Common Catalog Envelope S...
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Joseph Kim Member
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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). 3 6.5 x 4.75 6.25 x 4.5 4 ¼ 7.5 x 5 7.25 x 4.75 4 ½ 7.5 x 5.5 7.25 x 5.25 5 8.5 x 5.5 8.25 x 5.25 6 8.875 x 5.75 8.625 x 5.5 6 ½ 9 x 6 8.75 x 5.75 6 5/8 9.5 x 6 9 x 5.75 6 ¾ 9.5 x 6.5 9.25 x 6.25 7 9.625 x 6.25 9.375 x 6 7 ¼ 10 x 7 9.75 x 6.75 7 ½ 10.5 x 7.5 10.25 x 7.25 8 11.125 x 8 10.875 x 7.75 9 11.5 x 8.75 11.25 x 8.5 9 ½ 12 x 9 11.75 x 8.75 10 12.625 x 9.5 12.125 x 9.25 13 13 x 10 12.75 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.
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Sebastian Silva Member
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Standard International envelope sizes differ.
Catalog Envelopes
Common Catalog Envelope Sizes and Enclosure Dimensions Use catalog envelopes for heavy material like magazines and catalogs.
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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.
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Mason Rodriguez 1 minutes ago
Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, num...
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Ella Rodriguez 10 minutes ago
Standard International envelope sizes differ.
Commercial Envelopes
Common Commercial Enve...
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Hannah Kim Member
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Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages). 1 6 x 9 5.75 x 8.75 1 ¾ 6.5 x 9.5 6.25 x 9.25 2 6.5 x 10 6.25 x 9.75 3 7 x 10 6.75 x 9.75 6 7.5 x 10.5 7.25 x 10.25 7 8 x 11 7.75 x 10.75 8 8.25 x 11.25 8 x 11 9 Policy 4 x 9 3.75 x 8.75 9 ½ 8.5 x 10.5 8.25 x 10.25 9 ¾ 8.75 x 11.25 8.5 x 11 10 Policy 4.125 x 9.5 3.875 x 9.25 10 ½ 9 x 12 8.75 x 11.75 11 Policy 4.5 x 10.375 4.25 x 10.125 12 Policy 4.75 x 10.875 4.5 x 10.625 12 ½ 9.5 x 12.5 9.25 x 12.25 13 ½ 10 x 13 9.75 x 12.75 14 Policy 5 x 11.5 4.75 x 11.25 14 ¼ 11.25 x 14.25 11 x 14 14 ½ 11.5 x 14.5 11.25 x 14.25 15 10 x 15 9.75 x 14.5 15 ½ 12 x 15.5 11.75 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.
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Kevin Wang 15 minutes ago
Standard International envelope sizes differ.
Commercial Envelopes
Common Commercial Enve...
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Lifewire / Jacci Howard Bear Used for business, direct mail, and personal correspondence, and direc...
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David Cohen Member
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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.
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Luna Park 27 minutes ago
Lifewire / Jacci Howard Bear Used for business, direct mail, and personal correspondence, and direc...
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Henry Schmidt 9 minutes ago
The Monarch is a variation of the #7 ¾ envelope but with a pointed flap. The window version has sin...
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.
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Emma Wilson Admin
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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.
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Ella Rodriguez 50 minutes ago
They are normally used for invoices or billing statements, paychecks, and receipts. The following li...
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Liam Wilson 66 minutes ago
Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, num...
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.
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Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages). #5 5.5 x 3.0625 5.25 x 2.8125 #6 6 x 3.375 5.75 x 3.125 #6 ¼ 6 x 3.5 5.75 x 3.25 #6 ½ 6.25 x 3.5625 6 x 3.3125 #6 ¾ 6.5 x 3.625 6.25 x 3.5 #7 6.75 x 3.75 6.5 x 3.5 #7 ½ 7.625 x 3.75 7.375 x 3.5 #7 ¾ & Monarch 7.5 x 3.875 7.25 x 3.75 Check 8.625 x 3.625 8.375 x 3.5 #9 8.875 x 3.875 8.625 x 3.75 #10 9.5 x 4.125 9.25 x 3.875 #10 ½ 9.5 x 4.5 9.25 x 4.25 #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 4.75 #16 12 x 6 11.75 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.
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Square Envelopes
Common Square Envelope Sizes and Enclosure Dimensions Square envelopes l...
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Square envelopes are used primarily with announcements, advertising, and specialty greeting cards or...
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.
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Square envelopes are used primarily with announcements, advertising, and specialty greeting cards or...
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Isabella Johnson 11 minutes ago
Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, num...
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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.
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Harper Kim 21 minutes ago
Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, num...
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Actual dimensions for enclosures will depend on the thickness of the enclosure (paper thickness, number of pages). 5 5 x 5 4.75 x 4.75 6 6 x 6 5.75 x 5.75 6 ½ 6.5 x 6.5 6.25 x 6.25 7 7 x 7 6.75 x 6.75 7 ½ 7.5 x 7.5 7.25 x 7.25 8 8 x 8 7.75 x 7.75 8 ½ 8.5 x 8.5 8.25 x 8.25 9 9 x 9 8.75 x 8.75 9 ½ 9.5 x 9.5 9.25 x 9.25 10 10 x 10 9.75 x 9.75 13 ½ 13.5 x 13.5 13.25 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.
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Standard International envelope sizes differ. Was this page helpful? Thanks for letting us know!
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Standard Sizes and Dimensions for Envelope Enclosures GA
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REGULAR Menu Lifewire Tech for Humans New...
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Ella Rodriguez 67 minutes ago
Announcement Invitation Envelopes
Typical uses of the A-Style envelopes are for greetin...