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Envelopes are available in many different sizes and types of paper. They can even be custom-made if necessary, but this will add manufacturing time and cost to your project.

Paper merchants stock a range of standard envelope sizes. It's a good idea to choose an envelope that is about 1/4" larger than both the height and the width of the piece you are mailing. This allows for easy insertion but controls possible damage to the enclosure by minimizing excess space.

We have summarized standard envelope sizes for your convenience.


“A” Envelopes
These envelopes have a square flap. Some have deckle edges. Because they are available in many colors and finishes with matching text and cover papers, they are good choices for announcements, informal invitations, booklets, and brochures. (There may be a minimum order quantity for matching papers.) “A” envelopes come in boxes of 250.

   
Name Envelope
Dimensions
Typical Enclosure
Dimensions
   
A-2 4-3/8 x 5-3/4 4-1/8 x 5-1/2
A-6 4-3/4 x 6-1/2 4-1/2 x 6-1/4
A-7 5-1/4 x 7-1/4 5 x 7
A-8 5-1/2 x 8-1/8 5-1/4 x 7-7/8
A-10 6 x 9-1/2 5-3/4 x 9-1/4
A-Long 3-7/8 x 8-7/8 3-5/8 x 8-5/8


Baronial Envelopes
These envelopes have a pointed flap. Baronial envelopes and cards are used primarily for formal business purposes. Matching enclosures can be ordered with or without a raised border panel. Color selection is usually limited to white and off-white. They come in boxes of 250.

   
Name Envelope
Dimensions
Typical Enclosure
Dimensions
   
4 3-5/8 x 5-1/8 3-3/8 x 4-7/8
5 4-1/8 x 5-1/2 3-7/8 x 5-1/4
5-1/2 4-3/8 x 5-5/8 4-1/8 x 5-3/8
6 4-3/4 x 6-1/2 4-1/4 x 6-1/4



Commercial Envelopes

Used for personal and business correspondence including letters, statements and involves, and for reply mail, these envelopes also can be ordered with standard diecut windows. Many number 10 envelopes are color matched as part of a letterhead package.

 
Name Envelope
Dimensions
 
6-1/4 3-1/2 x 6
6-3/4 3-5/8 x 6-1/2
7-1/2 3-3/4 x 7-5/8
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


Booklet Envelopes
Also known as “open-sided” envelopes, booklet envelopes are used in high volume mailings because they are machine insertable. They can be ordered with a self-sealing option, and in durable synthetic papers.

 
Name Envelope
Dimensions
 
3 4-3/4 x 6-1/2
6-1/2 6 x 9
6-3/4 6-1/2 x 9-1/2
7-1/2 7-1/2 x 10-1/2
9 8-3/4 x 11-1/2
9-1/2 9 x 12
13 10 x 13


Catalog Envelopes
Also known as “open-end” envelopes, these generally require hand insertion of enclosures. They can be ordered with a self-sealing option, and in durable synthetic papers.

 
Name Envelope
Dimensions
 
1 6 x 9
1-3/4 6-1/2 x 9-1/2
6 7-1/2 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 10 x 15
14-1/2 11-1/2 x 14-1/2
15-1/2 12 x 15-1/2
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