Postal Reference & More Than You Ever Wanted to Know About Envelopes!

Envelope Size Chart   

The sizes are listed in inches with the shortest dimension first.


Commercial

These are the most popular envelopes for business correspondence that is sent and received daily. They usually have a commercial flap and are most frequently used for letterheads, invoices, statements, checks, writing stationery and direct marketing mailings.
   

 
 #  Size
 6 1/4  3 1/2" x 6"
 6 3/4  3 5/8" x 6 1/2"
 7 3/4  3 7/8" x 7 1/2"
 8 5/8  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"

Note: The 7 3/4 envelope with pointed flap is also known as Monarch.



Announcement

These are very common envelopes. The flaps are usually pointed or flat. 
They are generally used for announcements, invitations, cards, small booklets, brochures or promotional pieces.

 #  Size
 A-2  4 3/8" x 5 3/4"
 A-6  4 3/4" x 6 1/2"
 A-7  5 1/4" x 7 1/4"
 A-8  5 1/2" x 8 1/8"
 A-10  6" x 9 1/2"
 Slim  3 7/8" x 8 7/8"



Baronial

These are more formal envelopes, are deeper and typically use a pointed flap. They are popular for invitations.

 #  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"
 5 3/4  4 1/2" x 5 3/4"
 6  5" x 6"



Booklet

These envelopes are mostly used for sending catalogs, folders and the like.

 #  Size
 3  4 3/4" x 6 1/2"
 5  5 1/2" x 8 1/2"
 6  5 3/4" x 8 7/8"
 6 1/2  6" x 9"
 7  6 1/4" x 9 5/8"
 7 1/2  7 1/2" x 10 1/2"
 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"



Catalog

This style of envelope is mainly used for catalogs, magazines and reports.

 #  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 1/4"
 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"

 

 


Coin

Small envelopes used for coins, small parts, and more. Most coin envelopes are not mailable.

 #  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" 
 6  3 3/8" x 6"
 7  3 1/2" 6 1/2"