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Booklet Envelopes

Common Booklet Envelope Sizes and Enclosure Dimensions

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Open side envelopes with small square or wallet flaps and side seams, booklet envelopes are ideal for overall printing and mailing.
Booklet Envelope Sizes and Enclosure Dimensions

Booklet envelopes hold more than just booklets.

Image by Jacci Howard Bear; licensed to About.com
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.
Compare prices on booklet envelopes in different sizes and colors.

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. Standard International envelope sizes differ.

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