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Choosing the appropriate size and style of envelopes for your wedding invitations can be just as important as the invitation itself. The use of an inner envelope should also be considered when planning for the wedding invitations. When inner envelopes are used, the specific guest names are printed on the inner envelope while more broad naming information and address are printed on the outside envelope (i.e. Karen, Jared, Amy, and Brian are printed on the inner envelope and The Smith Family is printed on the outer envelope). Most pocketfold type invitations have the specific name information printed on the outside of the invitation when folded up. This makes the use of an inner envelope unnecessary.
When making your own invitations, you should choose an envelope that is approximately 1/4" larger than the size of the invitation. Below is a chart explaining some of the different sizes and styles of envelopes you can choose from for your wedding invitations, save the date cards, placecards, etc..
Envelope Type
Envelope Name
Envelope Size
Flap Styles
Stationary Envelopes
# 10
4.125" X 9.5"
Announcement Envelopes
4.375" X 5.75"
4.75" X 6.5"
5.25" X 7.25"
5.5" X 8.125"
5.75" X 8.875"
6" X 9.5"
Baronial Envelopes
# 16*
# 17*
5 1/2 Bar
Walton Inside
Monona Outside
2.125" X 3.625"
2.375" X 3.375"
2.6875" X 3.6875"
3.563" X 5.562"
3.625" X 5.125"
4.375" X 5.75"
6.5" X 6.5"
4.75" X 6.5"
5.25" X 7.25"
5.25" X 7.5"
5.5" X 7.75"
Square Envelopes
5 1/2"
6 1/2"
7 1/2"
8 1/2"
9 1/2"
5" X 5"
5.5" X 5.5"
6" X 6"
6.5" X 6.5"
7.5" X 7.5"
8.5" X 8.5"
9" X 9"
9.5" X 9.5"
* Size of envelope is too small to mail
The announcement and baronial type envelopes are used for the more traditionally-sized invitations, while stationary and square envelope types are used for more modern invitations. It is also noted that square envelopes usually require additional postage.
It is extremely important to make a sample product before ordering all of the materials for your project. I also recommend taking a fully-completed invitation to your local post office to determine postage costs before mailing all your invitations. It is also smart to order approximately 10 to 15 percent more envelopes than you need for errors.